Alert issued for missing man from Lower Sioux Indian Community

Quincy Domingo Schaffer hasn't been seen for three days, police say. (Supplied)

Police have issued an alert as they search for a missing man out of the Lower Sioux Indian Community.

According to the Minnesota BCA, 21-year-old Quincy Domingo Schaffer hasn't been seen since Tuesday. The circumstances of his disappearance are unknown.

Police say Schaffer was last seen wearing white jogger pants and a white and black sweatshirt.

Anyone with information on his whereabouts is asked to contact the Lower Sioux Police Department.