A third body has been found after four young men from Illinois went missing over the weekend on Lake Beulah in Wisconsin, authorities said Monday.

The body’s identity hasn’t been released, but officials said it is believed to be one of two men who remained missing after a group of four were believed to have been involved in a canoe accident.

The bodies of the other two men, identified as 20-year-old Lanny Patrick Sack and 21-year-old Christopher J. McQuillen were recovered from the lake Sunday. Search efforts for the fourth man remained underway Monday afternoon.

At the time of the accident, the four were spending the weekend at a lake house in the area with a group of friends. It was believed to be about 2:30 a.m. Sunday when they left the lake house and headed to the boat house, got in a canoe, and went out for paddle, officials said.

It was later that morning at about 9 a.m. when the others staying at the lake house noticed the group was missing and spotted an overturned canoe up against an ice shelf.

The men's friends told police the four were last seen around 2 a.m. when they went outside for a cigarette. Wisconsin officials said alcohol was involved.

Lake Beulah is just over 30 miles southwest of Milwaukee, according to Jason Roberts, the Recreation Safety Specialist for the Wisconsin Department of Natural Resources.

"There's no indication of any foul play just a tragic accident out in the cold waters," said Roberts. He added the water temperature was near freezing at 34 degrees.

All the men are from Illinois and attended New Trier Township High School, the school said in a statement. They are said to be between the ages of 20 and 31, according to police.

Sack was being mourned at a baseball academy where he coached youths.

“Patrick had started to coach for us last year and he was just a dynamite young enthusiastic coach,” Lucky Strike baseball academy owner John Fix said of Sack. “He had a great rapport with the 13 year-old kids. They're gonna miss him and we're gonna miss him a tremendous amount.”

Fix said Sack trained at the academy himself as a kid.

“He had a great sense of humor,” Fix added. “He didn't take things too seriously when he was coaching. He knew the game, he treated the kids with respect.”

"It is with immeasurable grief that we learned yesterday of the boating-accident deaths of four young men," Superintendent Linda Yonke said in a statement. "From information received at this point, it appears that all of the men attended New Trier Township High School for all or part of their high school years. Our deepest condolences are extended to the families and friends as they cope with this tragic loss."

"We are deeply saddened by the news of this tragic accident. Our thoughts and prayers are with the families and all who were close to these young men," A spokesperson for Northern Illinois University told NBC Chicago.