Authorities are seeking more information about a large gathering Saturday night that left three Los Angeles police officers injured and buildings vandalized in Boyle Heights.

At 8:41 p.m. on Saturday, officers responded to reports of a large group causing vandalism near the 600 block of Anderson Street, the Los Angeles Police Department said in a statement.

Officers requested backup to respond to multiple vandalism suspects within the group. Members of the group then began to throw rocks and bottles at the officers and set off fireworks, according to police.

The officers then created a skirmish line to push the group away from the vandalized area, according to the police statement, and continued to see rocks, bottles and fireworks thrown at them.

The group, which was declared an unlawful assembly by police, was eventually dispersed and no arrests were made.

Three officers were injured. One officer was cut in the torso by a thrown rock, another officer suffered a head injury from a “heavy object being thrown at his helmet” and a third officer was hurt in his leg and wrist from a fireworks explosion, according to police.

The area around Sixth and Anderson streets was “heavily vandalized,” police said, with nearby buildings tagged with spray paint.