A 21-year-old man was hospitalized in critical, but stable condition after he was stabbed Tuesday night at a pool party on the Northwest Side.

Police said two men were at the pool at the Highview Place Apartments in the 15900 block of Chase Hill when they began to argue.

The argument escalated and an 18-year-old man pulled out a knife and stabbed the other man numerous times in the upper torso and back.

The victim was rushed to the hospital. Police located the suspect a short time later.

He has been charged with aggravated assault. His name has not been released. Police believe alcohol was a factor in the stabbing.