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Los Angeles police issued a citywide tactical alert to disperse a large crowd that gathered at a punk show in Cypress Park on Saturday night, with some revelers setting off fireworks while others disrupted traffic.

No injuries were reported, and no arrests were made, authorities said.

Police responded to the 2000 block of North Figueroa Street around 9:45 p.m. to reports of a large crowd setting up for a possible party, said Officer William Cooper, a police spokesman. They found people trying to set up a stage of some sort, he said. A tactical alert was broadcast for extra officers to respond and help disperse the crowd, he said.

Police estimated about 100 to 200 people had gathered, although video of the show posted to social media showed a crowd of about 1,000 people or more. A band could be seen playing while people set off fireworks.

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