On 16 December 2025, at a Russian school in the town of Odintsovo, near Moscow, Timofey Vladimirovich Kulyamov, a 15-year-old student, carried out a knife attack, killing a 10-year-old Tajik student. After some resistance, during which the attacker held another student hostage, Timofey was arrested by the authorities. The attack was livestreamed.