Ventura County detectives arrested a man living in Cher’s Malibu home after learning that the 23-year-old, who is reportedly Cher’s assistant’s son, was related to a drug overdose that happened earlier in Thousand Oaks, Calif. 

“The target of the search warrant is Donovan Ruiz,” People confirmed. “His arrest is related to a narcotics overdose that occurred within the last two weeks.” Garo Kuredjian, a captain with the Ventura County Sheriff’s Office, told People magazine that investigators determined Donovan was responsible for supplying narcotics to a victim, who later died of an overdose in mid-September.

Cher was not at home during Thursday’s arrest, as she is now in the middle of her international tour, with her next show slated for Sept. 28 in Brisbane, Australia.