Police swarmed popular Dolores Park in San Francisco on Sunday in response to a shooting that injured at least one person, according to police.
The shooting occurred about 5 p.m. after officers heard shots fired, police said. Responding officers found a man suffering from a gunshot wound, and he was transported to the hospital for non-life threatening injuries.
A number of officers already had been assigned to patrol the park as part of the department's heightened presence there for Carnaval, Supervisor Rafael Mandelman said in a tweet.
A clerk at a nearby cafe reported seeing a "huge commotion," with lots of police in the area but did not hear the gunshots.
No arrests had been made nor were there any suspect descriptions available, police said.
Anyone with information about the shooting should contact the SFPD Tip Line at 415-575-4444.