More than a week after four women alleged Smokey Robinson had sexually abused them for years, the LA County Sheriff’s Department has opened a case.

The Los Angeles County Sheriff's Department said Thursday that it has opened a criminal investigation into rape and sexual assault allegations against Motown music luminary Smokey Robinson. The department said in a statement that its Special Victims Bureau is “actively investigating criminal allegations” against Robinson.

Lawyers for four of singer Smokey Robinson's former housekeepers filed a lawsuit against the singer and his wife earlier in May.