Mom Killed While Demanding Justice for Slain Teen

By Staff | December 17, 2010 | 11:00 AM EST

Ciudad Juarez, Mexico (AP) - Gunmen have killed a mother protesting in front of the governor's office in northern Mexico to demand justice for her slain daughter.

State prosecutor Jorge Gonzalez says the three masked men pulled up in a car and shot Marisela Escobedo Ortiz.

Escobedo had been protesting for three days in front of the governor's palace in Chihuahua. She had been campaigning for justice in the killing of her teenage daughter since a judge exonerated the main suspect in April.

Seventeen-year-old Rubi Frayre Escobedo's body was found dismembered and burned in 2008. Her live-in boyfriend had been charged with her murder.

Gonzalez said Friday that Escobedo was killed Thursday night.