NBC bosses refute West's comments

US TV network NBC has distanced itself from Kanye West's comments, after he blasted US President George W Bush during Friday's broadcast of A Concert For Hurricane Relief.

West, who didn't perform in the one-hour special, was on the stage with comedian Mike Myers reading a script from the teleprompter when he deviated from the pre-written dialogue to attack Bush and the government's reaction to Hurricane Katrina.