BILL Cosby’s wife has called for a criminal investigation into the suburban Philadelphia prosecutor behind his sexual assault conviction, saying the case was “mob justice, not real justice”.

Camille Cosby also said the case that could put the 80-year-old comedian in prison for the rest of his life was a “tragedy” that must be undone.

She made her first comments on the verdict in a three-page statement sent to the media through a family spokesman a week after a jury found her husband of 54 years guilty on three counts of aggravated indecent assault.

She said chief accuser Andrea Constand was a liar whose testimony about being drugged and molested at Cosby’s home in January 2004 was “riddled with innumerable, dishonest contradictions”. She echoed Cosby’s lawyers, who argued Constand framed him to score a big payday.

Constand’s lawyer bristled at the statement and asked: “Why would any reputable outlet publish that?”

“Twelve honourable jurors – peers of Cosby – have spoken,” lawyer Dolores Troiani said.

“There is nothing else that needs to be said.”

Constand said in a tweet last week that “truth prevails”.

Mrs Cosby compared the dozens of other women who have accused her husband to a “lynch mob” spurred on by the media.