DENVER — George Hickenlooper, who won an Emmy Award in 1992 for directing “Hearts of Darkness: A Filmmaker’s Apocalypse,” has died. He was 47.

In a statement Saturday, Denver mayor and Colorado Democratic gubernatorial candidate John Hickenlooper says his cousin died of apparent natural causes. Police say he was found dead Saturday morning.

Los Angeles-based George Hickenlooper was in Denver for the premiere of his latest film, “Casino Jack,” starring Kevin Spacey.

Other films directed by Hickenlooper include “Factory Girl,” “Mayor of the Sunset Strip” and last year’s documentary, “Hick Town,” based on footage shot while he followed his cousin around during the 2008 Democratic National Convention.

“Hearts of Darkness” was a well-received documentary about the making of the film “Apocalypse Now.”