Witnesses said the 18-year-old girl was bleeding heavily from her stomach following a still-unexplained accidental shooting inside a home Sunday night.

As TribLive in Pittsburgh reports, the teen was listed in critical condition Monday following surgery at a Pittsburgh trauma center.

And while police in Scott Township, Allegheny County, say the 6 p.m. Sunday shooting inside the residence was accidental, exactly how that shooting took place is thus far unexplained.

However, police say no charges are planned at this time.

Meanwhile, WTAE reports a witness to the shooting aftermath encountered a bloody and chaotic seen:

“My daughter said [the victim] was bleeding, like, she had a lot of blood on her shirt. But [the victim] wasn’t being very responsive. She was awake, but she wasn’t very responsive,” neighbor Michele Johnson, who said her daughter was there moments after the shooting, told WATE