PHILADELPHIA (AP) - A Philadelphia woman has pleaded guilty after her 2-year-old son picked up a loaded .357 revolver and fatally shot his 11-year-old sister.

Prosecutors say the toddler found the gun under a bed and shot Jamara Stevens while 31-year-old Tiffany Goldwire was in the bathroom on April 5.

Assistant District Attorney Joanne Pescatore says Goldwire has never identified the man who left the loaded, cocked gun on top of the refrigerator the night before.

She says Goldwire's 14-year-old son moved it for safe keeping and told his mother. But she says Goldwire told police she was drunk and high that night.

Goldwire faces eight to 17 years in prison after pleading guilty Thursday to involuntary manslaughter and child endangerment. She remains in custody until her Feb. 27 sentencing.

Her lawyer did not immediately return a message.