UPDATE from FPD:
Flagstaff Police Department. (01-29-2016). On January 29, 2016 at approximately 11:45 hours, a Flagstaff Police Department patrol vehicle was involved in a collision while assisting in a funeral procession traveling west on Butler from Ponderosa Parkway.

The procession was approximately 300 vehicles long and was traveling at a slow pace in the south (inside) lane of west bound Butler Avenue. One of the vehicles in the procession stopped to allow another vehicle who was traveling in the opposite direction, to either turn left or complete a U- turn. This vehicle collided with the police vehicle which was west bound in the outside lane assisting with the procession.
During the collision the air bags were deployed, and both occupants of the SUV and the police vehicle were transported for non- life threatening injuries. The collision investigation is being conducted by the Arizona Department of Public Safety.
UPDATE: Officer is not injured, but his airbags deployed and appears patrol car is severely damaged. Multiple minor injuries to other parties involved. Officers may have been involved in a funeral escort at the time of the accident.
Flagstaff FD, Guardian Medical, and Flagstaff Police are all on the scene of an injury accident involving a Flagstaff Police patrol car near the intersection of Lone Tree and Butler. Unknown injuries at this time. Stay tuned for updates.