ELY, Minn. (AP) — Sheriff's officials say a teenager has drowned in a northern Minnesota lake after leaving his life jacket on shore.

Witnesses told investigators the 18-year-old, wearing a life jacket, swam from shore to a floating dock and back on Twin Lakes near Ely Tuesday evening. Authorities say he decided to try again without the life jacket, but went under water.

His body was recovered about 30 minutes later.