Seamus Gray, 21, (inset) who was an active-duty member of the U.S. Navy, left Ibiza, 17 North Genesee Street in Waukegan, early in the morning on March 18, 2023, before going missing and later being found dead. | Provided Photos

The coroner has ruled U.S. Navy sailor Seamus Gray’s manner of death as undetermined after he went missing in Waukegan and his body was found in Lake Michigan.

The Lake County Coroner’s Office told Lake and McHenry County Scanner Friday morning they have concluded their investigation into the death of 21-year-old Seamus Gray.

The coroner’s office said the manner of death is undetermined based on the police and coroner’s investigation.

The manner of death is typically ruled as suicide, natural, homicide or accident.

The coroner’s office said they ruled the cause of death as drowning.

Gray’s blood alcohol concentration was 0.14, toxicology results showed. He had no¬†significant injuries on his body.

Waukegan Deputy Police Chief Scott Chastain said officers were on a traffic stop around 7:08 p.m. on April 19 near the Waukegan Harbor when ComEd workers flagged down the officers.

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The workers reported they were doing routine work near the Harbor when they spotted a body in the water.

An officer went into the water to attempt a water rescue and was able to bring the body to shore, Chastain said.

Police and fire crews have been extensively searching the Waukegan and North Chicago area for Seamus Gray, 21, (pictured left) who is an active-duty member of the U.S. Navy and went missing on March 18, 2023. | Provided Photos

The Waukegan Fire Department responded and retrieved the body further onto shore.

The body was confirmed to be Gray, who went missing on March 18 after leaving a downtown Waukegan bar.

“On behalf of the City of Waukegam, I extend our deepest condolences to the family of Seamus Gray,” Waukegan Mayor Ann B. Taylor said last month.

“As a mother, I can’t begin to imagine feeling the sadness and pain that Seamus’ family has and will endure. Our prayers are with Mr. Gray’s family,” Taylor said.

Surveillance footage from early morning on March 18 showed Gray traveling eastward from Ibiza Bar on Genesee Street in Waukegan.

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He was later seen on video walking by himself along the edge of Lake Michigan at the Waukegan Harbor.

Gray was a U.S. Navy Fireman Recruit assigned to Surface Warfare Engineering School Command at Naval Station Great Lakes.

He did not report back to the base at his assigned time of 2 a.m. on March 18.