The Mossad is suspected of killing Mahmoud al-Mabhouh, a senior Hamas military commander in January 2010. The killing was carried out by a team thought to consist of at least 11 agents, travelling on fake passports. They entered al-Mabhouh's hotel room, where Mabhouh was electrocuted and interrogated, and then his veins were probably injected with poison (lab tests have as yet failed to determine the poison's exact chemical composition), then the door to his room was locked from the inside. Burns were found under his ears, on his legs, in his groin, and on his chest. Although Hamas has declared Israel responsible for the assassination, no evidence linking Mossad to the activity has been found. Some commentators have pointed out that, based on the available evidence, the assassination is just as likely to have been a false flag operation. The passports used were comprised of: six British passports, cloned from those of real British nationals suspected by Dubai; five Irish passports, apparently using genuine data from living individuals; forged Australian passports that raised fears of reprisals against innocent victims of identity theft; a genuine German passport; and a false French passport. Dubai's police chief said that he was "99 percent" certain that the Mossad was behind al-Mabhouh's killing.