Montgomery County officials are investigating the fatal shooting of a 68-year-old man in his home by Upper Moreland Township police, according to a statement late Sunday from District Attorney Kevin Steele.

Two Upper Moreland police officers responded to a 911 call about a domestic disturbance shortly before noon Sunday at the Commerce Square Apartments in the Willow Grove section of the township, according to Steele’s statement. After an 83-year-old woman let officers in, they encountered a 68-year-old man who police say was armed with a gun, Steele said.

The man ignored police commands to drop the firearm and then began raising it, prompting the officers to shoot him, according to the prosecutor’s statement.

Montgomery County detectives are investigating the incident, per protocol for police-involved shootings.

No other information was provided.