A deadly crash shut down the intersection of Main Street and Mesa Drive for several hours on Wednesday afternoon.
Mesa police said the collision involved several vehicles, including an unmarked police vehicle. Three detectives were in the vehicle and were hit while waiting at a traffic light.
According to police, a driver in another vehicle died on scene. The identity or age of the person killed has not been released. No officers were injured in the crash.
The cause of the crash is under investigation.