Kimo Leopoldo Dead?

TMZ has confirmed former UFC superstar Kimo Leopoldo is dead. He was 41.

Several MMA websites are reporting Leopoldo died from a heart attack ... we're still trying to confirm that fact.

UPDATE:
TMZ has de-activated the link due to the story not being true:
http://www.tmz.com/2009/07/21/ufc-legend-kimo-leopoldo-dies/