A body found Wednesday afternoon in the Minnesota River is believed to be that of Moriah L. Zwart, the 20-year-old Le Sueur woman missing since May 1.

Le Sueur County Sheriff Dave Tietz said searchers were “quite confident” that they found Zwart based on clothing and other physical features. Tietz said official identification will come from the Ramsey County medical examiner’s office.

The body was found about 2.5 miles north of the sandbar where Zwart was last seen by a friend who was camping there with her. Alcohol is suspected to have played a factor in Zwart’s death, Tietz said.

The six-day search began after the friend lost track of Zwart and notified her parents. Soon after, searchers found a cellphone belonging to Zwart and by the third day, Tietz expressed doubts at finding the woman alive.

Foul play is not suspected, Tietz said.