LOS ANGELES - Chris Rock testified at a private eye’s racketeering trial Friday that he hired the man to investigate a model who demanded money after claiming she was pregnant with his baby, and who later accused him of sexual assault.

Outlandish and animated on stage, the 43-year-old comedian looked uncomfortable and spoke in hushed tones as attorneys asked him about his connection to Anthony Pellicano.

Pellicano and four other co-defendants have pleaded not guilty to using wiretaps and other tactics to dig up dirt to help clients in legal and other disputes. Rock was the latest star to testify at the trial; other celebrity witnesses included Garry Shandling, Keith Carradine and Paramount studio head Brad Grey.