A girl was shot by a stray bullet while sitting inside her Illinois home — and later died on what would have been her 12th birthday, officials said Wednesday.

Kentavia Blackful was sitting at a computer and planning her upcoming party Monday around 9 p.m. when a bullet pierced the house’s window and hit the sixth-grader in the head, her family told WGN-TV.

She was pronounced dead on Tuesday, her 12th birthday, at Christ Hospital, the Cook County Medical Examiner’s Office said.

The girl’s family had been watching the Chicago Bears game inside their living room in Harvey, a suburb south of the Windy City, when the shooting happened.

“It’s a shame that… we can’t even sit in the house. A child cannot play,” the girl’s grandmother, Bretta Blackful, told ABC Chicago.

The child’s grandfather, Dennis Hunt, told the station he noticed two men in black hoodies outside the house moments before gunshots rang out.

“They looked at me about nine times, so I looked back at them,” he told NBC Chicago. “Next thing I know, I didn’t see anybody, and then I heard gunshots.”

“I’m angry inside, because what happened never should have happened,” Hunt added.

No one has been arrested for the shooting, Harvey Police said.