DOWNTOWN LOS ANGELES (KABC) -- Several businesses, Metro trains and a police vehicle were vandalized in a chaotic scene overnight in downtown Los Angeles, according to police.
It happened just after midnight when the Los Angeles Police Department received a call about a "large group disturbance" at Trinity Street and E Washington Boulevard.
Police said more than 300 people gathered for an unpermitted rooftop event at what appeared to be an abandoned building.
According to video obtained by Eyewitness News, things escalated quickly when officers were on the scene.
Police said officers had to fire rubber bullets after they issued multiple warnings to clear the area. Officers reported illegal fireworks, drug use, and public drinking.
According to Metro, about 50 people blocked two A Line trains heading northbound and southbound at the intersection of Washington Boulevard and Maple Street, just south of downtown.
"The trespassers began to spray paint on both trains and gained entry into the southbound train and sprayed paint on the interior of the train," said Metro in a statement.
Metro said no train operators or passengers were injured and service was delayed for about 20 minutes.
The crowd eventually dispersed after more officers were called to the scene.
No injuries were reported, and no arrests have been made.