BEXAR COUNTY - An unwanted guest turned a summer party into a crime scene.

Bexar County deputies said a teenager was shot at a huge party in the Leon Springs area. Deputies are trying to figure out if the shooting is an accident or crime.

The party-crashing men came to a home in the 22900 of Cielo Vista Drive just before 2:30 a.m. Monday. Their exit led to the party being over.

Deputies received calls for shots fired and got a 911 call from inside of the home where the party was being held about a gunshot victim.

An 18-year-old had been shot in the leg and was among nearly 100 people attending the party. He was taken to University Hospital.

Witnesses told deputies the gunshot wound was self-inflicted but no weapon has been located at this time.

Investigators are working to identify the unwanted guests who could face charges of aggravated assault with a deadly weapon.