Jeffrey Douglas Campbell, a 54-year-old white man from Phoenix, was found fatally wounded in Mountain View Park, 9901 North 7th Avenue, in the early morning of Tuesday, June 12, 2012. He was discovered about 5:00 a.m.; investigators determined he had been stabbed and classified the death as a homicide. The likely time of the attack has been narrowed to between 3:00 a.m. and 5:00 a.m.

Witnesses reported hearing an argument or confrontation around 3:00 a.m., then saw two men running away from the park shortly afterward. Those individuals have not been publicly identified, and authorities have not released detailed descriptions. No arrests have been announced, and Silent Witness has offered up to a $1,000 reward for information leading to an arrest or indictment.

Anyone who may have heard or seen something that morning in north Phoenix or who knew Jeffrey Campbell is asked to contact Silent Witness or the Phoenix Police Department with information.