A 12-year-old boy allegedly beat to death 2-year-old Aniyah Batchelor, who was a foster child that had been staying at his Fort Washington, Md., home. The youth is being charged with murder for the June 3 killing.

The unidentified boy, who is the biological child of Batchelor’s hosting family, had been in the care of his 15-year-old sister at the time of the assault.  No adults were home at the time of the killing.

The boy’s father, who was guided by a 911 dispatcher, did attempt to perform CPR on Batchelor, but when she was rushed to a nearby hospital, doctors pronounced the small child dead.