Irina Osoltseva's son is being investigated for involvement in the disappearance of his relatives. On the day of his family's disappearance, he was not in the Kuturchinsky Belogorye region, Syrymbetova, deputy head of the first department for the investigation of particularly important cases of the main investigative directorate of the Investigative Committee of the Russian Federation in the region, told TASS. The tourists who visited Kotorchin during the Osulchevs' disappearance were also polygraphed, but they did not see the family.