"The biggest clue or piece of evidence really was the suspect's fatal mistake: walking into the FedEx office," U.S. Rep. Michael McCaul, R-Austin, said. "Up to that point, he had avoided surveillance cameras."
Led by the Austin Police Department, the team involved more than 500 officers and investigators from the FBI, the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, the Texas Department of Public Safety and other agencies.
They employed advanced technology like cell phone tracking and forensic analysis of bomb components. The DPS, for instance, supplied the team with one of its Pilatus spy planes, which were purchased to aid the state's border security campaign and can provide high-definition live video of targets on the ground from high altitudes. But they also relied heavily on old-fashioned police work, like scouring parking lots for Conditt's red Nissan Pathfinder.