PHILADELPHIA (CBS) — An 11-year-old girl found unresponsive in Northeast Philadelphia during a sleepover died of natural causes.

Police say the girl was sleeping over a neighbor’s house on the 9200 block of Angus Place on Tuesday night.

The neighbor found the child unresponsive Wednesday morning and called 911.

She was pronounced dead at the hospital.

Police say there was no sign of trauma on the child or any indication of foul play.