. >> ruth gomez rivera's 15-year-old son was on the bus. he left the country a week ago, but was caught by mexican authorities. >> ruth's son is interviewed by immigration officials, fingerprinted, and released to the care of his mother. >> the family is reunited for now -- but they can't go back home. they're scared it might be a death sentence for their son. it's been reported that a about a third of the children deported back to el salvador this year have faced death threats from gangs. his aunt says the family will have to go into hiding. >> this is what they're afraid of... >> at san salvador's central morgue officials say an average of 12 bodies arrive each day. >> many of them are gang-related deaths and many of them are young people. >> for three years, the orellana family has searched for their 16-year-old son. >> they just recovered his remains. the grandmother told us that he was killed by a gang. a dna match was finally made, and today they are here to bury him. the boy's mother lives in the united states, and was trying to bring