Texas police kill man 'with bomb' who opened fire on buildings in downtown Austin
Police officer at a crime scene (Shutterstock.com)

Police in Austin shot and killed a man who opened fire on three major buildings in the Texas capital on Friday and also may have had some type of explosive device in his vehicle.

Police received a call at 2:22 a.m. local time about shots being fired in the downtown area, Raul Munguia, the Austin Police Department's assistant chief, told reporters.

He said the suspect appeared to be firing on the Austin Police Department headquarters, the Mexican Consulate and the Federal Courthouse.

"One of the officers noticed the suspect, fired at the suspect, and the suspect went down, Munguia said. "At that time, they noticed what appeared to be an improvised explosive device inside the vehicle."

Munguia says officers then pulled the suspect away from the vehicle.

"The officers noticed that the suspect was wearing some sort of vest," Deputy Austin Police Chief Raul Munguia said. "At that point, being the fact that we were dealing with possible improvised explosive devices, the officers backed away from the suspect."

Police declared a "critical incident" and closed a major highway and blocked traffic through the downtown area. All roadways were later reopened.

No police officers or civilians were believed to have been injured, Munguia said. No motive has been found for the incident.

"The bomb squad is on scene and they are trying to determine the nature of the threat," Munguia said.

He said officers were examining the man's home in north Austin to see if there are any more explosives there.

(Additional reporting by Jon Herskovitz; Editing by Bill Trott)