This has raised the possibility that your passport details could be captured for improper uses while your passport is out of your control . The risk applies in particular to passports without biometric security features . `` We recommend that you only hand your passport over to third parties , including Israeli officials , when absolutely necessary . '' Britain 's Serious Organised Crime Agency concluded that the 12 British people whose passports were cloned were `` wholly innocent victims of identity theft , '' the foreign secretary said . Israel has a stated policy on security matters of neither confirming nor denying involvement . Australian Foreign Minister Stephen Smith said the British government would be giving its report on the passports to the Australian Federal Police , who are investigating how some of their country 's passports came to be used by the Dubai suspects . In an interview Tuesday with the Australian Broadcasting Company , Smith said Australia was not taking any action yet . `` We have an investigation underfoot , and we will await the results of that investigation by the Australian Federal Police , '' Smith said . He added : `` We 're treating
London , England -LRB- CNN -RRB- -- British citizens who travel to Israel should be aware that their passport details could be captured for `` improper uses , '' Britain 's Foreign Office warned Tuesday . It follows Britain 's expulsion of an Israeli diplomat and its accusation that the Israeli government was responsible for forging British passports used in an international murder plot . Foreign Secretary David Miliband said Tuesday that there are `` compelling reasons '' to believe Israel was behind it . Twelve suspects in the January murder of Hamas leader Mahmoud al-Mabhouh , who was found dead in his Dubai hotel room , used British passports , the Dubai police have said . Miliband said the passports had been copied from `` genuine British passports '' in a `` highly sophisticated operation , '' indicating that a state intelligence service was responsible . The Foreign Office changed its official travel advice Tuesday for British citizens going to Israel , to warn them about the risk of their passport details being compromised . A British investigation `` found circumstantial evidence of Israeli involvement in the fraudulent use of British passports , '' the advice says . ``