Prosecutors in Pennsylvania have filed the first sexual assault charges against award-winning American comedian and actor Bill Cosby, star of hit TV series The Cosby Show.

Mr Cosby has been charged with aggravated indecent assault after an investigation involving a former local university employee and an alleged incident in 2004.

He has previously said under oath he had a consensual sexual encounter with the woman.

The case was re-opened after dozens of women alleged they had been assaulted by Mr Cosby.