Police use superimposition technique to identify killers
Police have used superimposition, a specialised forensic medical technique, to compare an image of a man captured by a surveillance camera with the pictures of suspects and expect to find the murderers of two British tourists on Ko Tao in a few days.
The superimposition technique was applied to two of three suspects who allegedly molested Hannah Witheridge, one of the murdered tourists,on Sept 15, the night of the murder. A tourist had photographed them before the killings.
Pol Lt Gen Panya Mamen, Provincial Police Region 8 commissioner, said investigators made much progress and police sought search warrants today with the hope to arrest more suspects.
Police would also summon others who had left Ko Tao for additional questioning. The case should be closed in a few days because police have enough witnesses and evidence, Gen Panya said.
Results from DNA tests on two speedboat attendants did not match DNA samples found on the dead and other evidence, he added.
