AUSTIN -- Police are investigating after they said a shooter targeted several downtown buildings early Friday morning, including the Austin Police Department headquarters.
WARNING: The video below is extremely graphic and there is explicit language. A witness posted this video on YouTube Friday morning. (Mobile users go here to view the video).
Police said reports of shots fired came in around 2:22 a.m. Friday. Austin Police Chief Art Acevedo said the suspect, 49-year-old Larry Steven McQuilliams, fired at the Mexican Consulate, the United States Federal Courthouse and APD headquarters within a 10-minute period. Acevedo said at least 100 rounds were fired.
Acevedo said around 2:33 a.m., a sergeant managing two horses in APD's mounted patrol saw the suspect and returned fire. The man then fell to the ground, and officers noticed he was wearing "some sort of vest" and they found "suspicious cylinders" inside his van. A bomb squad responded to the scene, and APD headquarters was evacuated.
TIMELINE: Downtown Austin shooting
WATCH: Full press conference with APD at 9 a.m. Friday (mobile users go here to view the video):
Acevedo said it is unclear if the suspect died due to shots fired from the officer or if the man took his own life. No one else was injured.
Acevedo said the shooter's targets indicated that he might have had anti-government motives linked to immigration.
"If you look at the targets, it doesn't take a genius (to suggest) that that is the potential," Acevedo said. "I would venture that political rhetoric might have fed into some of this, but that is speculation on my part."
Acevedo also said the man is an Austin resident and has a criminal history. Officers are also investigating his residence.
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Sources told KVUE the officer was Sgt. Adam Johnson, a 15-year veteran of the department. He will be placed on administrative leave with pay in compliance with APD protocol.
Interstate 35 was closed as officers investigated, but reopened just after 6:30 a.m. The southbound frontage road is still closed between Eighth and 11th streets. Police said they will also have Seventh and Eighth streets between I-35 and Red River Street closed until further notice.
RAW VIDEO: APD 5:45 a.m. press conference