CHEYENNE, Wyo. (AP) — Laramie County investigators say it appears a Cheyenne woman killed herself and her 11-year-old daughter in an arson fire last week.

The Laramie County Sheriff's Office on Friday identified the dead girl as Miriam Ortiz.

Ortiz is the daughter of 34-year-old Erica Delgado, who was also found dead in the burned trailer on the south side of Cheyenne on Feb 3.

Capt. Rich Hillegas with the Laramie County Sheriff's Office says investigators have recovered surveillance video of Delgado buying gasoline at a local convenience store before the fire. Hillegas says investigators have recovered text messages that indicated Delgado intended to commit suicide but says he couldn't release details.

Hillegas says the investigation is continuing. The department is asking anyone with information to contact investigators.