Arrest documents say two 15-year-old girls accused of killing their foster mom in New Mexico put her in a chokehold, tied her hands and feet and then smothered her with a pillow.
Fifty-three-year-old Evelyn Miranda was found dead Wednesday in San Patricio.
The Albuquerque Journal reports a neighbor heard strange noises at about 4 a.m. He went to check his livestock and noticed lights were on at Miranda's home and her van was missing.
The neighbor told Lincoln County authorities he knocked on the door but got no answer so he went inside, where he found the woman's body on a bed.
An arrest warrant affidavit alleges one of the girls told authorities she put Miranda in a chokehold while the other tied her up.
Each girl is charged with an open count of murder, which lets prosecutors determine the degree of the charge at a later date.
Information from: Albuquerque Journal, http://www.abqjournal.com