More from the Austin police:
Leads obtained over the last 24 to 36 hours brought police to a hotel on Interstate 35 in the suburb of Round Rock, north of Austin, where they located the suspect in a parking lot. As authorities waited for tactical vehicles to arrive, the suspected bomber drove away and stopped in a ditch, Austin Police Chief Brian Manley said in an early morning press conference.
When members of the SWAT team approached, the suspected bomber detonated an explosive device inside his car, Manley said.