ANDOVER, Maine (AP) — Divers from the Maine Warden Service are planning to resume their search for two Boston men missing in Lower Richardson Lake in Andover.

Officials say 26-year-year-old Hoang Vo and 30-year-old Phil Le were last seen Friday when they decided to go swimming while camping with a large group.

On Sunday, Edie Smith from the Maine Department of Inland Fisheries and Wildlife said nothing was found despite a full day’s search and the use of sonar equipment.

Smith says full dive operations are due to resume Monday.

Smith has said the men had been drinking before they went into the water and alcohol is considered a factor in the incident.