WEST HOLLYWOOD, Calif. -- A Los Angeles police helicopter made an emergency landing on a West Hollywood street Sunday when a warning alarm indicated a possible engine problem. No one was injured.

The chopper landed on San Vicente Boulevard in front of the Los Angeles County Public Library at 11:05 a.m. That location is near a helipad at the West Hollywood sheriff's station.

Deputies there said the chopper apparently had to set down when a warning light indicated an oil pressure problem in the engine, and possible loss of engine power.

County firefighters said no one was injured.

An LAPD spokeswoman confirmed that an emergency landing occurred due to a "possible mechanical problem," but said early reports from the pilot did not elaborate.

At that location, San Vicente Boulevard is a broad street with five lanes and parking.