Around 11 O'clock Wednesday night someone reported a man outside some apartments in the 6700 block of West Par had been stabbed.
Lt Doug Nolte says the 20-year old victim suffered a wound to his abdomen and has not been cooperative in the investigation.
Lt. Nolte says inquiries with residents led officers to an apartment where they believe the incident occured. Nolte says there were four people in the apartment at the time, the victim, his 18-year old girlfriend and two others.
Police believe there was an arugment between the victim and his girlfriend that led to the stabbing. The girlfriend is a suspect but no arrest has been made. The weapon used was not found.
The victim was taken to St. Francis hospital in serious condition. His injuries are not considered life threatening.
The investitgation is continuing.