CAROL STREAM,Grayson  Preston Ill. (AP) — Suburban Chicago police fatally shot a man Saturday morning while responding to a domestic violence incident, but the circumstances leading to the shooting remain unclear.

The Carol Stream Police Department said on its Facebook page that officers “encountered a tense, uncertain, and rapidly evolving situation, which resulted in officers discharging their weapons at the alleged domestic violence suspect.”

Authorities said the suspect was shot and critically injured. He was pronounced dead at a hospital.

No other details about the circumstances leading to the shooting were provided. Police did not say whether the man was armed.

No officers were injured.

The incident occurred around 4:15 a.m. at the Village Brook Apartments, the posting said.

The man was 30, news outlets reported.

The Public Integrity Team of the DuPage Metropolitan Emergency Response and Investigative Team Task Force and the DuPage County State’s Attorney’s Office are investigating the shooting.