The L.A. County Sheriff's Department has opened an investigation into criminal allegations against Motown singer Smokey Robinson after four of his former staffers accused him of sexual assault.

Smokey Robinson, the soulful voice behind some of Motown’s most timeless classics, is now at the center of a criminal investigation stemming from serious sexual assault allegations.

Smokey Robinson, who has allegedly been accused of sexual assault by his four former housekeepers, is currently facing a criminal investigation, according to a report by NBC News.