MOUNT CLEMENS, Mich. — Authorities near Detroit are searching for a 30-year-old Minnesota man who is missing in Lake St. Clair.

The Macomb County sheriff’s department said Craig Michael Moir of Winona was on a boat with three others near the mouth of the Clinton River late Thursday when he and another person went swimming. The department says the boat drifted away and the other swimmer made it back, but Moir didn’t.

The U.S. Coast Guard was notified about 12:15 a.m. toay and started searching. They’re joined by the sheriff’s marine division.

The sheriff’s department says it told the occupants of the boat to stay on the scene, but the boat operator started heading to a marina. Deputies arrested the 32-year-old St. Clair Shores man on suspicion of being under the influence of alcohol.