The CID is preparing to send abroad blood samples taken from the remains of the LTTE female suicide bomber at the Army Headquarters, since the locally conducted pregnancy tests have failed so far, a senior investigator said yesterday.
The CID is currently investigating whether the female cadre was actually pregnant.
Examination of blood samples taken from the leg muscle of the woman failed to establish whether the woman was pregnant as the blood had been contaminated with chemicals in the explosives.
Normal pregnancy tests are carried out by examining urine samples, but in this case blood had to be used. Since the blood is contaminated the tests are not positive. However there are highly sophisticated laboratory tests in foreign countries which could provide accurate results even in cases of this type.
The investigators are also examining the parts of the cellular phone used by the female cadre seconds before the explosion.
The investigators said a clear picture of how the woman entered the much guarded Army Headquarters would emerge in a couple of days.