The Austin bomber is dead after blowing himself up as police and FBI agents tried to arrest him in the early hours of Wednesday.
The bomber, described as a 24-year-old white male, killed himself and injured an officer when he detonated a bomb inside his car as police surrounded him several miles north of the city.
Despite the death police have warned that more bombs could still be out there because they do not know where the bomber has been in the last 24 hours.
Two people were killed and six injured in a series of bombings that left Austin gripped in fear and stoked racial divisions in the city.
Investigators traced the so-called “Austin bomber” using mobile phone technology, footage from a previous attack and store receipts, according to local reports.
Police Chief Brian Manley said the suspect, whose name will not be released until next of kin are notified, suffered “significant injuries” from the blast inside his car.
He said cops zeroed in on the suspect in the last 24 to 36 hours, before pinning his position at a hotel on Interstate 35, in the Austin suburb of Round Rock.
The vehicle soon stopped in a ditch on the side of the road and, as the SWAT team approached, the suspect blew up the device inside the vehicle.
The force of the blast knocked one officer to the ground as another pulled out his weapon and opened fire.
Authorities say it’s too soon to know the suspect’s motive or whether he was working alone. FBI agent Chris Combs said he was concerned other explosive packages may be on the loose.
On Tuesday, police released CCTV footage purporting to show the bomber delivering a package to a Fedex shipping centre in San Antonio, where it later exploded.
The bomb inside the package exploded at around 1am as it passed along a conveyor belt at the FedEx shipping centre in Schertz, around 60 miles from Austin.
The first incident occurred on March 2 when a package bomb exploded at a northeast Austin home, killing a 39-year-old Anthony Stephan House.
Two more package bombs then exploded further south on March 12. Draylen Mason, 17, was killed and his mother was wounded after they opened a package in their kitchen.
A 75-year-old Hispanic woman named by family as Esperanza Herrera was severely injured when a package bomb exploded at her home a few hours later.
The trip wire explosion on Sunday came just hours after police made an unusual direct appeal to whomever was responsible for three package bombs that killed two in the past month.