This is reported by the regional branch of the UK. 

“It was preliminary established that in the afternoon of June 5, 2020, the boy left his house in the village of Urmantau, Salavat district, and then left in an unknown direction. The parents of the child, noticing his absence, began his search, and then turned to law enforcement agencies, ”the statement said.

It is specified that search activities are currently being held, in which investigators, employees of the Ministry of Internal Affairs and the Ministry of Emergencies are participating "with the involvement of volunteer search and rescue teams and the villagers of the missing child."

Earlier, the UK said that in the Tver region they found a missing 12-year-old schoolgirl alive.