NEW HAVEN, Conn. (AP) — A New Haven man accused of distributing synthetic marijuana amid a rash of overdoses has been indicted.

Federal authorities say a grand jury indicted 47-year-old Quentin Staggers on Thursday on three drug charges. He faces up to 20 years in prison for each count.

Prosecutors have accused Staggers of possessing and distributing synthetic marijuana on July 20, Aug. 15 and Aug. 16.

He was detained by police Aug. 16 as New Haven dealt with a wave of more than 100 overdoses from the drug. No one died. Two other men also were arrested.

Staggers is an advocate for the homeless who was homeless himself for several years. It was not immediately clear if he has a lawyer.

Synthetic marijuana is usually is plant material sprayed with chemicals or other substances.