Police have arrested the father of a 10-year-old boy whose body was found in the Mississippi River over the weekend.

Kris Fletcher of the Crystal Police Department confirms in an email the arrest of Pierre Collins.

Police have called Collins a "primary suspect" in the disappearance of his son, Barway Collins, who was missing for nearly a month. Authorities said the body of Barway Collins was found Saturday, about 10 feet from the river's edge in Brooklyn Center.

Pierre Collins has said he is innocent.