Washington ( CNN ) -- Twelve U.S. service members brought prostitutes to their hotel rooms in Colombia prior to an April visit by President Barack Obama , according to a U.S. Southern Command report detailing parts of the investigation into alleged misconduct by military members of the security team for the trip . Partial details of the report were released Friday by the command , which took the lead in the investigation . The report shows , for the first time , what the service members did while in Cartagena , Colombia . One service member brought an overnight guest to his room during the first week of April , while the 11 others brought female guests to their rooms on April 11 and the morning of April 12 , according to the report . Read more : Is the Secret Service scandal a systemic problem or aberration ? While some of the service members had been together prior to returning to the hotel on April 11 , they made `` individual decisions '' to bring the women back to the el Caribe Hotel and pay for sex , the report said . The investigation of military personnel came after nine U.S. Secret Service agents were dismissed for spending time with prostitutes in Cartagena , where they had been sent to prepare for the president 's trip . CNN reported last month that seven U.S. Army soldiers and two Marines have been notified they will receive what the military calls `` non-judicial punishment '' for the misconduct . One member of the Air Force received a lesser letter of reprimand . The military is still investigating the role of two U.S. Navy personnel involved in the scandal . The nine service members were charged with violations of the Uniform Code of Military Justice . The U.S. Southern Command decided the charges warranted a non-judicial punishment rather than court-martial . Read more : Escort in scandal says life is ruined . The report said that the activity by the military members did not create a security risk . `` U.S. military members ' interaction with the third country national females did not present a risk to the operational mission or to U.S. national security , '' the report said . Investigators concluded that the women had been fully vetted by Colombian officials and U.S. investigators , who confirmed they were not part of a human trafficking network or affiliated with Colombian guerillas or other terrorist or drug-trafficking groups , according to the report . The report concluded that a , `` combination of unstructured free time , the prevalence of legalized prostitution , and military members ' individual choice to commit misconduct were the primary casual factors leading to the misconduct in question . ''
U.S. Southern Command report details what service members did on Colombia trip . Report finds 12 service members brought prostitutes to their rooms during April trip . Too much free time , legal prostitution contributed to misconduct , report finds .