Smokey Robinson under criminal investigation after sexual assault claimsMr Robinson has denied the allegations. Motown legend Smokey Robinson is under criminal investigation in Los Angeles over accusations of sexual assault. The sheriff's department told the BBC in a statement that its Special Victims Bureau was "actively investigating criminal allegations involving William Robinson AKA 'Smokey Robinson.' Mr Robinson was Motown's first hitmaker, writing number one records like Mary Wells' My Guy and The Temptations' My Girl. The women's lawyers held a press conference last week after filing the lawsuit, accusing Mr Robinson of being a "serial and sick rapist" who "must be stopped".