Rafael Prieto was a 20-year veteran of the Secret Service . The agency said in a statement that it is "aware of an alleged incident involving one of our employees" and has launched its own investigation. Authorities were looking into a suspected long-term relationship with a foreign national . A law enforcement source says his death last Saturday was an apparent suicide .
Rafael Prieto was a 20-year veteran of the Secret Service . He was assigned to President Obama 's protective detail . Authorities were looking into a suspected long-term relationship with a foreign national . A law enforcement source says his death last Saturday was an apparent suicide .