Due to increased warnings of potential Islamic State terror attacks in Europe, officials at London’s Heathrow Airport are considering implementing more stringent security protocols similar to those employed at Israel’s Ben Gurion Airport.

A Vietnamese worker from south London, Minh Quang Pham, was instructed by a senior Al-Qaeda operative how to build a bomb with which to attack Heathrow Airport, where he was to target Israeli and American arrivals, the UK’s Daily Mail reported on Sunday.