AUSTIN, Texas (AP) — Police in Austin, Texas, have shot and killed a man who they say opened fire on the Mexican consulate, police headquarters and other downtown buildings.

A police official says the response to the shooting was slowed down by the discovery of an apparent explosive device in the suspect's vehicle -- and then by the discovery that the suspect was wearing a vest that police believed might be rigged to explode. Authorities aren't yet confirming whether explosives were found at the scene or at the man's home.

No injuries are reported from the gunfire. There's no word on the identity of the gunman.

The gunfire was reported at 2:22 a.m. near the popular Sixth Street entertainment district, where bars close at 2. The governor's mansion is also a few blocks away. It's not known whether Gov. Rick Perry was there at the time.

Police are trying to determine a motive for the gunfire, which shut down a stretch of Interstate 35 for hours. The interstate later reopened but several blocks downtown remained closed to the public.

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