A young boy in Westmoreland County was shot in the face on Tuesday as he played with another child in his aunt's home.

The incident occurred on Kenneth Avenue in Arnold Tuesday.

Now police are searching for the gun and the person who may have left it inside of the home. It's believed that a visitor left the firearm at the house. The gun has not been recovered. It was apparently removed from the property before police got there.

Detectives executed a search warrant on the house Wednesday and took photographs of the basement, first and second floors. They also found blood evidence on the basement floor, on a lamp and on a nightstand.

Officials said police also found a .45 caliber cartridge and a handkerchief with blood on it.

Investigators said 4-year-old Anthony Alexander was in a bedroom with a 6-year-old. A gun was picked up off of the nightstand. Not long after, Anthony was accidentally shot in his left eye.

Police believe both boys had something to do with the gun going off.

His aunt, who was babysitting, took the injured child to Citizens Ambulatory Care Center in New Kensington. He was subsequently transported from the urgent care facility to Children's Hospital of Pittsburgh, where he underwent successful surgery.

The boy's uncle told Channel 11's Kelly Brennan that he received a call from police while he was at work.

"I was at work, and got a call saying my nephew was playing with a gun and shot himself in the face," the uncle said.

An investigation is ongoing. It will be up to the district attorney as to whether charges will be filed.

There is no official word yet on the young victim's condition.