It could have been much worse.
Police say that an 7-year-old boy found the key to a locked safe, took out his grandpa's disassembled gun, put it together, and accidentally shot his older sister in the arm, according to CBS Philly.
“For a 7-year-old to do that, that’s pretty creative, so he was playing with it for a little bit of time,” Lieutenant George McClay of the Philadelphia Police. “So far from our investigation, we think it’s an accident.”
The girl, 8, was rushed to the hospital on Thursday after the children's grandparents heard the shot, according to police.
Neighbors told WPVI that the children are well cared for.
"They're a wonderful family," Beverly Jackson told the station. "Really, they're just a close-knit family and I know this was an accident."
McClay said the boy showed remorse for his actions.
"The kid is very shook up," he told WPVI. "He's not happy with what he did and he knows he did something wrong."
The girl spent last night in the hospital but is expected to recover, according to MyFoxPhilly. Police do not plan to file charges against the boy or the grandparents, who have custody of the children.