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(CNN) — Mark Anthony Conditt, a suspect in the wave of bombings that terrorized Austin, killed himself early Wednesday in what police described as an explosion inside his car, leaving investigators scrambling to determine whether any bombs remain and if he acted alone.

Conditt, named by a source with direct involvement in the investigation, detonated a bomb in his vehicle before dawn on the side of Interstate 35 in Round Rock, north of Austin, as police approached him, authorities said.

Police had come to believe Conditt was responsible for five explosions that killed two people and injured five others in and near Austin beginning March 2.

With fear mounting across the region, authorities tracked Conditt to a hotel in Round Rock reportedly using receipts, internet searches, witness sketches and, ultimately, surveillance video that revealed he’d delivered packages days earlier to an area FedEx store, officials said.

Authorities had the hotel surrounded early Wednesday, when Conditt got in his vehicle and drove away, police said. They followed him. That’s when he pulled into a ditch and blew himself up, police said. The blast injured a SWAT officer.

Even in announcing his death, though, police warned a wary public not to let down their guard.

“We don’t know where this suspect has spent his last 24 hours, and therefore we still need to remain vigilant to ensure that no other packages or devices have been left throughout the community,” Austin Police Chief Brian Manley said.

Latest developments

• Police don’t yet “understand what motivated (the suspect) to do what he did,” Manley said, adding, “This investigation is still underway, so we cannot say that this was individual acting on their own.”

• Conditt, 23, lived in Pflugerville, a city just outside Austin, according to public records and a longtime neighbor of his parents.

• People were evacuated Wednesday morning from parts downtown Pflugerville, police said, without elaborating. In a video, Pflugerville Mayor Victor Gonzales noted a heightened presence of police and said, “This is a fluid situation, and information is limited at this time.”

• Austin police on Wednesday morning conducted a “follow up investigation” at the FedEx facility where the intact bomb was found a day earlier, the agency tweeted. The building was temporarily evacuated, but police said normal business “will resume.”

• Conditt was an Austin Community College student from 2010 to 2012 but did not graduate, the school said.

Suspect blew himself up as police approached, police say

The bombings — five in 19 days, with some involving packages left on Austin doorsteps — had driven the area to near-panic.

But by Tuesday night, investigators had identified their suspect and found his vehicle at the Round Rock hotel, about 20 miles north of Austin, Manley said.

While police waited for tactical teams to arrive, Conditt drove away, then stopped in a ditch off I-35, Manley said.

As SWAT members approached the vehicle, Conditt “detonated a bomb inside the vehicle, knocking one of SWAT officers back.” The blast killed Conditt and injured the officer, Manley said.

A different SWAT officer fired a gun at Conditt, Manley said; it wasn’t immediately clear whether Conditt was shot.

Video and an intact package may have helped ID suspect

Video of the suspect dropping off two packages Sunday at a location described by CNN affiliate WOAI as a FedEx store south of Austin appears to have played a major role in helping investigators identify him.

The surveillance images show a man wearing gloves, a black T-shirt and a cap taking two packages into the shop. WOAI published the surveillance images, and Austin Mayor Steve Adler told CNN that police believe the person in the images was responsible for the Texas bombings.

Police haven’t explicitly said what happened to the packages in that video. But early Tuesday, in the last known explosion before the suspect killed himself, a package exploded on an automated conveyor at a FedEx sorting center near San Antonio, slightly injuring a worker there.

Also Tuesday, another unexploded package bomb was discovered at another FedEx facility near Austin.

“Police say that they used that (video) as the final piece to put all of this together, really in the past 24 hours,” Tony Plohetski, an investigative reporter for the Austin American-Statesman, told CNN’s “New Day.”

FedEx said it provided authorities with “extensive evidence” from its security system on the packages and the person who shipped them.

The bombs: Design and materials

The unexploded bomb intercepted Tuesday will have provided a gold mine of clues, including materials used in the bombs and possibly DNA from the attacker, a federal law enforcement source involved in the Austin investigation told CNN.

Investigators believe the same person is behind all the explosive devices, the source said, adding that the devices are similar in design and use the same components, including a “mouse trap” or a “close pin” switch, according to the source.

The level of bombmaking skill doesn’t necessarily point to military experience, the source added.

Plohetski, the Austin American-Statesman, citing a high-ranking law enforcement official, said investigators found common household ingredients in the bombs, so police hit the area’s stores, scanning receipts and looking for clues.

“Agents fanned out throughout the city of Austin, going to big box retail stores, as well as locally owned stores, trying to determine whether or not there were suspicious purchases,” Plohetski told CNN. “They were “going through receipts and going through sales records from those stores.”

The explosions

The first three explosions in Austin involved cardboard packages left in front yards or on porches. The parcels weren’t delivered by the US Postal Service or services such as UPS or FedEx, police have said.

Those blasts — one on March 2 and two more on March 12 — killed or wounded three African-Americans and one Hispanic person. They happened in east Austin areas where most residents are minorities, and some there expressed concern the attacks might have been racially motivated.

The first explosion killed 39-year-old Anthony Stephan House; the second killed 17-year-old Draylen Mason; and the third critically injured a 75-year-old woman. Police have not ruled out the possibility that those bombings could be hate crimes.

In the fourth blast, on March 18, a device was triggered by a tripwire, injuring two white men in an area where most residents are white.

The fifth explosion happened early Tuesday at the FedEx sorting facility near San Antonio.

This story has been updated to correct Mark Anthony Conditt’s age to 23, based on public records. Earlier, police identified the suspect as a 24-year-old man.



(CNN) — After perpetrating five bomb attacks over 19 days — and possibly planning a sixth that was foiled by police — Austin’s “serial bomber” used his deadly wares to take his own life Wednesday, authorities said.

It brought an end to a nearly three-week spate of terror in the Texas capital, but not before explosions killed two people and injured several others. The first three were package bombs left at homes; the fourth, on the side of a road; and the last went off at a FedEx facility near San Antonio. A sixth bomb, at a FedEx facility in Austin, was intercepted by authorities. It never detonated.

Here’s what police say about each attack:

March 2

The first blast was reported about 6:55 a.m. in the Harris Ridge neighborhood of north Austin. It was a powerful device, essentially a pipe bomb, in a normal-size delivery box, which would be a theme for the first three bombings.

What we know about the first three bombings

Anthony Stephan House, 39, died from injuries he suffered after opening the package.

His LinkedIn profile said he was a senior project manager for Texas Quarries and participated in commercial projects throughout the state, including at University of Texas properties and the Phillips 66 headquarters in Houston.

March 12

The first of two bombs that day, it was detonated around 6:44 a.m. in the city’s East MLK neighborhood. Like the bomb 10 days earlier, it had been left at the victim’s home and it appeared to have been hand-delivered rather than by any courier service. The bomb detonated when the victim brought it inside and opened it.

It killed 17-year-old Draylen Mason, a promising student who played stand-up bass in a youth orchestra and was taking college classes while in high school. His mother was injured in the bombing. Neighbors saw her in the yard covering her face with her hands and brought her blankets because the blast had ripped off some of her clothing, said Anne Marie Castillo, who lives five houses down from Mason.

Mason and House were both African-American.

“(Mason) was a young guy with so much future and potential. We talked a lot about college. He hugged me every morning before class,” Austin Community College professor Samuel Osemene said.

March 12 again

Police were processing the scene at the East MLK bombing when another bomb erupted in the Montopolis neighborhood of southeast Austin, a few miles from Austin-Bergstrom International Airport.

The midday blast left a 75-year-old Hispanic woman badly injured, spurring police to leave open the possibility of hate crimes, given the victims were, at this point, all minorities.

“We believe that the recent explosive incidents that have occurred in the city of Austin were meant to send a message,” Austin police Chief Brian Manley said.

March 18

This was the first explosion to break with the pattern of doorstep deliveries. Instead, this bomb was left on the side of the road in the upscale Travis Country neighborhood of southwest Austin. It could have maimed any passer-by, police said.

Two white men, a 22- and 23-year-old, who were walking alongside the road when the bomb detonated, were taken to a hospital with serious but non-life threatening injuries.

Despite the new modus operandi, Manley said investigators believe the bombings are connected.

March 20

“A single package” exploded on a conveyor belt at a FedEx facility in Schertz, Texas, outside San Antonio, injuring one of the company’s employees, who was treated and released at the scene.

FBI San Antonio spokeswoman Michelle Lee said that, based on preliminary evidence at the scene, investigators suspect it could be related to the Austin explosions.

If that’s true, it would make this explosive device the first that was actually shipped.

Also March 20

About six hours after the explosion in Schertz, Austin police received a call about a suspicious package at a FedEx facility in southeast Austin, just across Highway 183 from Austin-Bergstrom International Airport, authorities said.

“It was determined the package contained an explosive device and was disrupted by law enforcement. No injuries were reported,” said a joint statement from local and federal authorities.

Police in Sunset Valley, a suburb southwest of Austin, announced the FBI was investigating a link between the string of bombings and a mail delivery office in Sunset Valley.

“It appears that the source of the suspect packages was a private package delivery office in Sunset Valley,” police said.

March 21

Police, responding to information they’d received over the previous 36 hours, tracked the suspect’s vehicle to a hotel in Round Rock, north of Austin. As police waited on tactical units to arrive, the vehicle left the hotel, and police followed.

The vehicle stopped in a ditch on the side of Interstate 35, and as the Austin Police Department’s SWAT team approached, the suspect detonated an explosive device inside the car, knocking down a SWAT team member and injuring the officer.

Manley said the suspect, who was later identified as Mark Anthony Conditt, 23, was responsible for all the incidents in Austin.

This story has been updated to correct Mark Anthony Conditt’s age to 23, based on public records. Earlier, police identified the suspect as a 24-year-old man.

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