Washington ( CNN ) -- A Secret Service agent suspected of having a romantic relationship with a Mexican woman is dead of an apparent suicide , a law enforcement official told CNN Thursday . The source said Rafael Prieto , 48 , was assigned to President Obama 's protective detail . The Secret Service confirmed Thursday that Prieto 's death last Saturday is currently being investigated by the Metropolitan Police Department in Washington , along with the medical examiner 's office . No official determination of death has been made . Prieto 's access to Secret Service facilities had been suspended while authorities were looking into his apparently unreported and long-term relationship with a foreign national , the law enforcement official said . `` There is nothing to indicate that any classified or sensitive information was compromised as a result of this relationship , '' according to the source . The official said Prieto was involved in an `` administrative process '' about his connection with the woman but that he was not under investigation by the Secret Service 's Office of Professional Responsibility . Prieto could have been in violation of Secret Service protocols if he had not informed superiors about a personal relationship with a foreign national . Such relationships came under a spotlight after agents sent to Cartagena , Colombia , in advance of President Obama 's trip earlier this year spent time partying with prostitutes . `` Rafael Prieto had a distinguished 20-year career with the Secret Service that was marked by accomplishment , dedication , and friendships , '' said Secret Service spokesman Edwin Donovan . `` The Secret Service is mourning the loss of a valued colleague . ''
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 .