Staff at properties linked the disaster are being questioned by the authorities who are still trying to ascertain how a bomb could have been smuggled into the hold.
The news comes as claims were made yesterday that bomb detectors used by at least five Sharm el Sheikh hotels are fake.
The equipment is similar to a device which has been at the centre of two-year fraud trial in the UK.
Experts have claimed the devices used to sweep cars, people and luggage are simply radio aerials attached to handles.
