Two siblings from Texas , another family , went missing in Mexico on July 13 . `` I do n't know why they took them , '' Pedro Alvarado said . Some witnesses say security forces took them . Erica , Alex and Miguel Angel Alvarado , and a fourth person who was with them were found dead . They were buried Sunday in Guadalajara .
Two siblings from Texas , another family , went missing in Mexico on July 13 . Some witnesses say security forces took them . Erica , Alex and Miguel Angel Alvarado , and a fourth person who was with them were found dead . They were buried Sunday in Guadalajara .