Qld toilet block death 'not suspicious'

A man found dead in a Brisbane toilet block appears to have died of natural causes, police say.

A man whose body was found in a Brisbane public toilet block died of natural causes, police believe.

The grim discovery was made at a Thornton Street public bathroom, at Kangaroo Point, on Monday.

A police spokesman said it appeared the man died of natural causes but was unable to confirm reports he was found in exercise gear and may have had a heart attack while running.