One of five men on a boat late at night with too few life jackets fell into a lake north of the Twin Cities and his body was found several hours later, authorities said.

Suspected drinking by some or all of those aboard the runabout early Sunday prompted the Isanti County Sheriff's Office to give preliminary tests to the four at the scene, on the north end of Long Lake, said Chief Deputy Chris Caulk.

Results have yet to be determined of those tests and of toxicology testing on the man who died, Dylan J. Dusbabek, 32, of Isanti, Caulk added.

Deputies on the case saw only one life jacket available for the five people, all adults, Caulk said. The law requires that boats have one life jacket for every person aboard. None of the five was wearing a life jacket, the chief deputy said.

Caulk said some of those on the boat had only recently met one another.

According to the Sheriff's Office:

One of the men aboard called authorities to report that Dusbabek had fallen into the lake, which is about 5 miles west of Isanti.

After several hours, the rescue mission shifted into recovery mode. Divers found Dusbabek's body at about 9 a.m. in 8 feet of water and not far from shore.

Along with everyone involved being tested, the boat also was impounded for further examination.

Paul Walsh • 612-673-4482