Kallsen's death has been reported by the New York Post, but no further details were available as WENN went to press.

Tributes have reportedly been paid to Kallsen on social media.

The actor starred opposite Pitt in 1990s TV series Glory Days, and he was rumoured to have overslept and missed his audition for 1991 movie Thelma & Louise, which later went to his roommate who scored his big break in Hollywood.

Kallsen last appeared onscreen in 1993 movie The Seventh Coin.