Leave a secret mark on the criminal

After being infringed, we should collect all kinds of criminal evidence rationally and tactfully. Among them, it is particularly important to leave secret notes on criminals skillfully.

Some of them are left on the body and some on the clothes.

(1) Those left on the body, such as scratching the criminal's skin, can be quietly applied to the criminal's body or clothes if there are ink, clay, pigment, paint, lime, etc. at the scene. The secret notes painted on the body will not be kept for long, and should be checked immediately after the crime; those left on the clothes will be kept for a longer time, and the criminals will not know it when they leave the secret notes. Small items such as rice grains, paper balls, pens and tablets are also a way to make secret notes. After committing crimes, it is difficult for criminals to find and notice their existence. Tearing his clothes is also a way to keep a secret note.

(2) On the contrary, another form of secret record is obtained from the criminal's body and clothes, such as leaving the criminal's hair when scratching his hair, leaving his blood after scratching, or deliberately allowing the criminal to contact smooth objects, such as boxes, drawers, cups, table boards, etc., leaving fingerprints on his fingers; pulling buttons and pieces of clothing materials from his clothes, etc., which is undoubtedly a problem Every evidence will play an important role in the identification of criminals.