"A dog trainer always works with a dog on the crime scene. If an item that supposedly belonged to the criminal is found there, it will be included in the database," he said.
As Martynov explained, such items can involve a part of clothes, a handkerchief and even a button on the suspect's clothes. The seized item is then placed inside a hermetically sealed container where low temperatures are constantly kept," the colonel added. "Therefore, such a clue can be kept for a period of up to two years. Specialists of the expert and criminological center are carrying out scientific research into increasing the storage life of such clues," Martynov said.
Today specialists from the expert and criminological center annually carry out about 1.2 million expert studies and participate in the inspection of 1.3 million crime scenes.
The center can hold physical-technical, biological, computer-based, accounting, forensic and economic expert examinations, and also pyrotechnic and fire-technical studies.
The center's personnel constantly exchange experience with their colleagues in other countries.
Today 14,000 specialists are on the center's staff.
Martynov also said that the center's personnel participated in the investigation of 80 per cent of all committed crimes.