Pittsburgh Police responded for a 9-1-1 call of a person stabbed on the 6600 block of Frankstown Avenue around Noon.
Pittsburgh EMS and Zone 5 officers responded, and located the adult male victim.
He was transported in critical condition with stab wounds to the abdomen.
The victim and suspect are coworkers who had a dispute. The suspect fled towards an unknown direction after the stabbing.
The investigation is ongoing.