Police say a hotel employee found the 38-year-old Gray dead in a room Monday at the Town Plaza Hotel in Urbandale, a suburb of Des Moines. Foul play isn't suspected.

The Polk County Medical Examiner's Office plans an autopsy Tuesday.

Most of the band's members grew up in the Des Moines area.

Slipknot is known for its grotesque masks, and released its first album in 1999. It sold more than a million copies.