Secret Service scandal: Inside Colombian strip club where Obama's agents 'picked up prostitutes'

The Secret Service officials embroiled in a prostitution scandal brought a whopping 20 or 21 women back to their Colombian hotel last week, a Maine senator briefed on the scandal said today. Republican Sen Collins, a ranking member of the Senate Committee on Homeland Security and Governmental Affairs, said in an email to Reuters that she was told by Secret Service boss Mark Sullivan that '11 agents involved. Twenty or 21 women foreign nationals were brought to the hotel, but allegedly Marines were involved with the rest'. She added: 'Director Sullivan is rightly appalled by the agents actions and is pursuing a vigorous internal investigation. He ordered all the agents to return to Washington immediately, and all have been interviewed'. Sen Collins' comments came amid revelations that the now-suspended agents reportedly bragged about working for President Obama while they were out at a Colombian night club last week. While sizing up the crowd of dancers and prostitutes at the Cartagena brothel called the Pley Club in the days leading up to an international summit, they boasted that they 'work for Obama' and were 'here to protect him'. Shortly after downing pricey whiskey, nearly a dozen Secret Service officials left the club with some of the most attractive prostitutes. Anger: President Obama has spoken of his fury at the alleged antics of his Secret Service agents Seedy: The PleyClub, in Cartagena, Colombia, where Obama's Secret Service agents allegedly picked up prostitutes ABC News reports that the men, some of whom are married, bought some of the most expensive services from the 'highest category' prostitutes who charge $200 or more. Two of the 11 men who were sent home following the incident held supervisory positions in the service, while three were members of the elite Counter-Assault Team which provides the first line of defence in the case of an attack on the President. It has also been revealed that the men had copies of Barack Obama's schedule for his trip to the Summit of the Americas in their hotel rooms, raising the possibility of a security breach. 'Embarassed': Leon Panetta, left, and General Martin Dempsey, right, have promised to investigate the military's role in the scandal All 11 men have had their security clearance revoked and been banned from Secret Service buildings while an investigation into their conduct is carried out. The scandal has also involved more than 10 members of the military, it emerged today as the U.S.'s top soldier said he was 'embarrassed' on behalf of the Armed Forces for 'letting the boss down'. The incident, which saw police called to the agents' luxury hotel after one of the men apparently refused to pay a prostitute with whom he had spent the night, overshadowed the major summit which took place in the Colombian town of Cartagena over the weekend. Performance space: Cheap tables and seats are packed around a stage, which is completed with two dancing poles Provocative: The PleyClub website promises to turn your fantasies into reality While none of those implicated in the scandal have been identified, NBC News reported on Monday that three of the men were from the Counter-Assault Team. This unit is usually assigned to the President's motorcade, and its members are expected to fend off attacks to allow the Commander in Chief to make a swift escape.