(CNN) - A Missouri police officer shot and killed a teenager Tuesday night in Berkeley, Missouri, just 2 miles from the St. Louis suburb of Ferguson, where Michael Brown was killed by police, an event that set off protests across the country.
But even though both cases involve white officers and black teens, Berkley's mayor said the incidents are not the same.
Surveillance video appears to show a person - identified by police and his family as Antonio Martin, 18 - pointing a gun at an officer in a gas station parking lot in Berkeley right before the officer fatally shot the teen, Berkeley Mayor Theodore Hoskins told reporters Wednesday.
St. Louis County Police released on YouTube videos from three different angles that captured parts of the scene.
The shooting led to a tense couple of hours at the station, where scuffles with police broke out - and what appeared to be lit fireworks were thrown - as scores of people gathered to see what happened in an area still emotional over the August 9 shooting of Michael Brown.
But Hoskins, who is black, said that this shooting cannot be likened to Brown's death, in part because unlike the Ferguson case, this one was captured on video and allegedly involves an armed teen.
"We reviewed the video and it appears that there was a gun pointed at the officer before the officer fired," Hoskins said. It "does not appear that the police officer initiated" the incident, he said.