Updated

A Texas police chief says three officers fired 12 times after gunfire erupted during last month's deadly melee involving bikers at a restaurant in Waco.

Police Chief Brent Stroman said Friday that three Waco officers fired their rifles outside a Twin Peaks restaurant where bikers had gathered for a meeting May 17.

Investigators have said a dispute among rival biker gangs ignited a fight in the restaurant's parking lot, where nearly two dozen law enforcement officers were staged in anticipation of the meeting.

Nine people were killed and 18 injured. Investigators haven't said who fired the fatal shots.

Stroman says officers "did not fire indiscriminately into the crowd" after the shooting began.

Stroman also defended the decision to arrest about 175 bikers and charge each with engaging in organized crime.