Sean “Diddy” Combs’ Los Angeles and Miami homes were raided by federal agents on Monday, according to authorities.

A Homeland Security Investigations spokesperson said in a statement that the raid was executed as part of an “ongoing investigation.” Law enforcement sources said that while the search warrant was being executed in Los Angeles, Combs’ sons were detained outside the home, as is customary in such circumstances. Law enforcement sources familiar with the matter said that the searches are being carried out at the hip-hop producer’s properties as part of a federal investigation led by the Southern District of New York into alleged human trafficking. No criminal charges have been filed in the investigation.