The U.S. Coast Guard continues its search off the coast of Mexico for three Americans who were last seen on April 4th as they departed Mexico and set out for San Diego, California.

According to the Coast Guard, Kerry O’Brien, Frank O’Brien and William Gross were sailing onboard the “Ocean Bound,” a 44-foot LaFitte sailboat. They were last heard from on April 4 when they departed Mazatlán, Mexico — a resort town in Sinaloa.

The trio of Americans were sailing to San Diego with a planned stop in Cabo San Lucas, where they would pick up additional supplies on April 6 but the Coast Guard said there is no record of the group arriving in Cabo San Lucas or providing any report of their location. Additionally, marinas in Baja, Mexico, have yet to see the vessel or sailors.

On Friday, the Coast Guard put out a statement regarding the search.

ALAMEDA, Calif. — The Mexican Navy, with the assistance from the U.S. Coast Guard, is searching for three American sailors, last heard from April 4, near Mazatlán, Mexico.

Three persons aboard the sailing vessel Ocean Bound, a 44-foot La Fitte, reportedly left Mazatlán en route to San Diego. The sailors planned to stop in Cabo San Lucas on April 6 for provisions and to report in before continuing on to San Diego.

However, there was no record of them arriving in Cabo San Lucas or a report in of their location.

Search and rescue coordinators have contacted marinas throughout Baja, Mexico, with negative sightings of the vessel. Urgent marine information broadcasts have been issued over VHF radio requesting all mariners to keep a lookout for the missing persons and vessel.

If anyone has any information on the whereabouts of Kerry O’Brien, Frank O’Brien, and William Gross or the sailing vessel Ocean Bound please contact the U.S. Coast Guard search and rescue coordination center at 510-437-3701.

According to the Coast Guard, the sailors made a couple of calls to docks in Cabo San Lucas on April 6th but that is the last communication received from the crew.

Kerry O’Brien is from the Pittsburgh area.

Ellen Argall is living through what no parent should. Her daughter, Kerry O’Brien, is missing, along with Kerry’s husband, Frank, a third sailor, Bill Gross, and their boat Ocean Bound.

“It’s agony. Pure agony. I’m trying to hold myself together,” Kerry’s mother, Ellen Argall, said.

Kerry is a Murrysville native and graduated from Franklin Regional High School in 1989. She quickly took the water and swam in high school.

Kerry started boating after meeting her husband. The couple currently lives in Alaska.

As of Monday morning, the missing sailors have not been located.