Feb. 5 (UPI) -- A pilot and an Arizona state trooper died when their police helicopter crashed while responding to a police-involved shooting in Flagstaff.

The Arizona Department of Public Safety did not identify the deceased but said they died when the Bell 407 Ranger helicopter in which they were flying crashed in a location north of Route 66 and between Thompson Street and Mark Lane in Flagstaff.

The Arizona DPS did not say what caused the crash while the pair was responding to a call for help from Flagstaff police and other law enforcement involved in an active-shooter incident.

Local resident Amanda Brewer was among those who called 911 at 8:40 p.m. MST to report what she said were five gunshots, AZ Family reported.

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