(CNN) -- A family of four was "assassinated" by armed gunmen near dawn Wednesday in their home in a neighborhood of Ciudad Juarez, Mexico, a spokesman with the Chihuahua state attorney general's office told CNN.
"We don't know if they were involved in the drug war. We don't have information in that respect. We know that they were assassinated," spokesman Arturo Sandoval said.
The attorney general's office identified the family as Marco Antonio Barraza Hinojo, 45, his wife, Norma Delia Ramírez Leyva, 39, and their teenage daughters Rosa Aide Barraza Ramirez and Norma Margarita Barraza Ramirez.
Some of the family members may have been executed while they slept, local reports said.
The state attorney general's office said later Wednesday that all the victims had multiple gunshot wounds from 9mm and 22-caliber weapons.
The male victim was found in the kitchen of the house. The three female victims were found in a bedroom in the house, the attorney general's office said.