A 13-year-old boy shot his 6-year-old sister with a handgun at their Oakland Park, Fl. home on Saturday, where they appeared to be unsupervised.

"The siblings had been home alone when the teen found the handgun," Sheriff's Office spokeswoman Dani Moschella said, according to the South Florida Sun Sentinel.

The girl was taken to Broward Health Medical Center where she is listed in critical but stable condition. The incident appeared to be an accidental shooting, according to Moschella.