Authorities say George DeGrazio of Loveland died of a heart attack. His body was found Saturday after workers at a Cinemark theater in Fort Collins noticed an odor and forced their way in.
James Meredith, Cinemark's vice president for marketing and communication, said Tuesday DeGrazio was in a small family restroom that was locked from inside.
DeGrazio's son, Dylan, says the family reported him missing on Jan. 10 after he was last seen the day before.
Cinemark released a statement saying five employees are on leave while the company investigates.
Police in Loveland and Fort Collins didn't immediately return calls.
(Copyright 2012 by The Associated Press. All Rights Reserved.)