The video shows the house of the former official, as well as the investigative and operational group located in the courtyard where the crime occurred.
The footage also shows traces of blood on the ground and material evidence noted by law enforcement officers, including cartridges.
Earlier, the UK said that Lavrentiev was killed when he went out to check who got into the territory of the site near his house.
The ex-mayor’s wife heard gunshots, and after a while she found the body of her husband and another man with gunshot wounds.
A criminal case has been opened.