CALGARY -- Cameras are rolling on an unauthorized TV movie about pop icon Michael Jackson.

Filming began in Calgary this week on the project, which is a co-production between city-based Nomadic Pictures and Los Angeles-based production company Blueprint Entertainment.

Flex Alexander, from the sitcom One on One, stars as Jackson. Also in the cast are Eugene Clark, Peter Onorati, Amy Sloan and Krista Rae. Production runs until May 28.

The movie will detail Jackson's life from his greatest success -- the blockbuster album Thriller -- to his current status as accused child molester and pop culture freak show.

Nomadic recently co-produced a TV movie about Hollywood madam Heidi Fleiss.

The Jackson movie will air at the end of July on digital network Movie Central.