London: Chiefs of UK`s MI6 intelligence agency have said that doctors are being trained by al Qaeda to plant explosives inside the breasts of female suicide bombers.
The chiefs believe that the terrorists can escape airport security and blow off airliners with hidden non-explosives planted inside breasts or in the abdomen of male terrorists.
According to the Daily Mirror, they said that scanners are then not able to detect the bombs, which are detonated by injection.
A doctor has been killed this year in a CIA drone strike who was working with the Al-Qaeda in the Arabian Peninsula (AQAP) bomb maker Ibrahim al-Asiri.
AQAP has also been named as the top security threat to the United States.
Senator Dianne Feinstein, head of a Senate intelligence group, said: "I am hopeful we will be able to kill this bomb maker."