The El Paso Police Department had issued an AMBER Alert for the boys who were abducted Saturday afternoon.
Police were searching for 8-year-old Leonardo Ortega and 2-year-old Matias Carrillo.
The boys were returned to the United States and reunited with their mother with the help of the FBI and U.S. Marshalls.
Police were searching for 26-year-old Justin Carrillo in connection to their abduction, but police haven't said if he was found with the children.
Police say no arrests have been made, but the investigation continues.