Margarita Lopez Carbajal was last seen August 25, 2005, near Sasabe, Arizona, while attempting to cross the border from Mexico into the United States. She was 25, Hispanic, very long hair, and between 5 feet 5 inches and 5 feet 7 inches tall. On that day she wore black pants, a blue-gray shirt, a silver chain, and either black-and-white or multi-colored tennis shoes.

After a full day of walking through the Sonoran Desert, Margarita was left behind by her traveling companions; why she was left behind is not clear. Her disappearance was reported to the Pima County Office of the Medical Examiner on September 26, 2005, and family reference DNA samples have been collected to assist identification efforts. Little else is publicly known about her movements after August 25.

If anyone was in the Sasabe area that day or knew Margarita or the people she was traveling with, please share what you remember.