Salvadoran migrant corpses leave Matamoros for El Salvador The corpses of the two Salvadoran migrants that drowned in the Rio Grande river are loaded into a van to begin the return from Matamoros, Mexico, to El Salvador. Oscar Martinez was 25 and his daugher Valeria was nearly two years old when the current of the Rio Grande river swept them away from her Sunday evening as they tried to cross the US-Mexico border to Brownsville, Texas.\\n\\nATTN CLIENTS: IMAGES MAY BE DISTRESSING BUT DO NOT SHOW DEAD BODIES. IMAGES