The U.S. Coast Guard, state and local emergency responders assisted in a cleanup effort after diesel fuel spilled from a private yacht in Marina del Rey May 2.

A spokesperson for the Coast Guard 11th District said the diesel fuel spilled from an 84-foot yacht in the A Basin when a fitting in the fuel tank apparently failed, causing the diesel to leak into the bilge. The bilge pump automatically activated, sending the discharge into the water, according to the Coast Guard.

Coast Guard pollution investigators arrived at the site and identified the responsible party, who took steps to arrange for a swift cleanup, the agency spokesperson said.

The exact amount of diesel fuel spilled had not been determined, but the yacht’s tank capacity is 500 gallons. It is believed that 250 gallons of fuel was in the tank at the time of the leak, according to the Coast Guard.

No additional fuel leaked after the failed tank fitting was clamped off, and Los Angeles County Fire Department responders were able to contain the sheen.

The vessel owner hired a commercial oil spill response organization to assist in the cleanup.