It is necessary that you should bring the important items to collect the evidence, which includes gloves, powder, transparent tape and collection bags.
Do not allow unauthorised personnel to enter the crime scene
Once the crime has been reported, it is important that you should never allow any unauthorised personnel to enter the crime scene. Such individuals might compromise the situation of a crime scene or their inexperience can become an issue when trying to solve the case. Therefore, you must keep full control over the crime scene and strictly restrict any person from entering the premises.
Carefully examine the crime scene
It is important that you should closely look for different types of evidence at the crime scene. Analysing the situation and place will help you gather fingerprints and other items of importance. It does not matter how shrewd the culprits are, you can always find fingerprints if you look in the right place. For example if it is a robbery, you should look for the signs of forced entry and you might get fingerprints from doors or windows. If anything was eaten at the crime scene, it is a good idea to make a note it as well. Remember it is very important that you wear the proper gloves otherwise you will end up tampering the evidence.
If you find any prints on the table or somewhere else, it is strongly suggested that you should throw a little powder as it will make the fingerprints stand out. Now, you should place the tape over it and paste it for a while and then pull it back slowly. This will give you nice impression of the fingerprint on the piece of tape.