The Cumberland County Sheriff’s Office is reporting that a Standish man died Monday afternoon at a popular swimming area on Sebago Lake.

Capt. Donald Foss identified the victim as Harold Gauld, 28, of Standish, in a statement on Tuesday. Foss said it appears that Gauld may have suffered a medical event before becoming submerged underwater, which is why the department is investigating the cause of his death.

Foss said detectives are trying to help the Office of the Chief Medical Examiner determine whether Gauld died from a medical event, from drowning, or a combination of both.

The incident took place about 2 p.m. Monday while Gauld was swimming in about 4 feet of water at Rich Memorial Beach on Sebago Lake. The popular swimming area is located at the end of Newbegin Way off Harmon’s Beach Road in Standish.

“After not resurfacing, Gauld was quickly pulled onto the beach,” Foss said in the release. “Several registered nurses who were at the beach performed CPR until emergency medical services arrived and took over. First responders also performed life saving measures for an extended period but unfortunately, they were not able to revive Mr. Gauld.”

“The Sheriff’s Office offers our condolences to Mr. Gauld’s family. We would like to thank the bystanders on the beach, who quickly sprang into action and gave their best efforts to revive Mr. Gauld,” Foss said.