Police video shows Ferguson suspect just before being shot

FERGUSON, Mo. -- St. Louis County police have released surveillance video footage they say shows Tyrone Harris Jr., the 18-year-old black suspect who was critically wounded after being shot by police Sunday night in Ferguson, minutes before he fired a gun at plainclothes officers.

Harris was shot late Sunday after allegedly opening fire on an unmarked police van.

Police say a 13-second clip of security camera footage from a West Florissant Avenue insurance office that they released Tuesday afternoon shows him grabbing a handgun from his waistband in response to shots being fired during the Ferguson protests.

According to the St. Louis County Police Department, two people were firing gunshots at one another in the 9200 block of West Florissant around 11:10 p.m. Sunday, CBS News affiliate KMOV reported. While exchanging gunfire, one of the suspects ran across a parking lot in the area and was spotted by St. Louis County Police detectives, who were in an unmarked police van.

After spotting Harris, the detectives turned on their emergency lights and drove toward the suspect, who, Chief Jon Belmar said, turned and began firing gunshots. The officers returned fire from inside the vehicle and then pursued the man on foot when he ran.

Harris again fired on the officers, Belmar said, and all four officers fired back. Harris was struck and fell to the ground.

He was listed in critical condition Monday at a St. Louis hospital. County police and Barnes-Jewish Hospital were unable to provide updates on his condition Tuesday.

Harris' father disputed the police account Monday but declined to discuss his son's shooting Tuesday.

Tyrone Harris Jr. has been charged with 10 felonies -- five counts of armed criminal action, four counts of first-degree assault on a law enforcement officer and a firearms charge.