Ricardo B. Brazziell / Austin American-Statesman via AP
Investigators are looking into the backgrounds of the victims of the bombings to see if there is any connection, but already believe the three incidents are linked, Manley said.
FBI Special Agent in Charge Chris Combs of the San Antonio Division said that many of the agency’s national resources, including criminal profilers and bomb technicians, have been brought into the area to assist.
“The full resources of the FBI are being brought to bear to help on this,” he said.
AFT Special Agent Jeff Boshek said that a national response team comprised of around 30 specialists has been brought in to assist with the investigation.
All the victims of the bombings have been people of color, Manley said, and investigators are not ruling out terrorism or a hate crime as possible motivations. “We're not saying that we believe terrorism or hate is in play, but we absolutely have to consider that because we don’t want to limit what we are investigating, what we are considering,” he said.
Two of the bombs exploded after they were picked up, and another one exploded after being brought inside a residence and while being opened, Manley said.
Austin’s mayor, Steve Adler, said in an interview that “I'm absolutely worried” when asked about the possibility of more explosions.
"I believe we're going to find an answer to this. But obviously I’m, I’m concerned that we might not or might not quickly enough," he said.
Although the city is hosting the massively popular South by Southwest event this week, Adler said “at this point, we have the resources to be able to handle this."
Suzanne Cordeiro / AFP - Getty Images