The Mexican navy is searching with the assistance of the U.S. Coast Guard for three U.S. men who went missing early this month while sailing in the Pacific near Mazatlan in western Mexico, authorities said.

The Secretariat of the Navy confirmed Saturday that elements of Mexico’s navy are participating in the search.

The men — identified as Kerry O’Brien, Frank O’Brien and William Gross — were on the 44-foot sailboat Ocean Bound when they were last heard from on April 4, the U.S. Coast Guard said in a statement issued Friday.

No information was given on the men’s hometowns.

The trio had planned to stop in Cabo San Lucas at the southern tip of Mexico’s Baja California peninsula April 6 to take on supplies and report before continuing their voyage to San Diego, the statement said.

But “there was no record of their arrival in Cabo San Lucas, nor a report of their location,” the Coast Guard said.

Coordinators of the search have contacted marinas in Baja California, but there were no reports of sightings of the vessel, the statement said.

(AP)