US Coast Guard officials have suspended a search for a possible downed aircraft two miles away from Redondo Beach Harbor after a four hour search on Saturday.
Coast Guard Sector Los Angeles-Long Beach authorities received an emergency notification from an aircraft's emergency locator transmitter beacon around 11:45 a.m., according to a Coast Guard press release.
Several witnesses in the area told authorities they saw oil sheen on the surface of the water near the Redondo Beach Harbor entrance but no planes were reported missing, the Coast Guard said.
A MH-65 Dolphin helicopter crew and 45-foot response boat were both launched to search for possible debris, and the Los Angeles County Fire Department assisted in the investigation.
The Coast Guard determined that there was no aircraft in distress and suspended the operation around 4:10 p.m.