"A criminal case was initiated to intensify search activities and the maximum possible use of all resources, forces and means in order to establish through an investigation all the circumstances of the unknown disappearance of the missing child," the press release says.

According to the investigation, on August 2, the boy “independently left the apartment located in the village. Ostashevo of the Volokolamsk urban district and left in an unknown direction.

In mid-July, the body of an eight-year-old girl "with signs of violent death" was found in a forest in the Sakhalin region. The girl disappeared on 6 July. She went to her friends in the city of Dolinsk.