Calls about an armed person in Koreatown led to a gambling den bust early Saturday, police said.
The Los Angeles Police Department received calls about a person with a gun near 8th Street and South Harvard Boulevard at around 5 a.m.
When officers arrived, they said they found a clandestine casino with several gambling machines inside a building nearby.
At least two dozen people were detained, and about seven were arrested for outstanding warrants, the LAPD said.
No one was injured, officials said.
The investigation is ongoing.