Fourteen children and seven adults were injured in the attack at the No. 88 school located near the city administration building of Izhevsk, the capital city of Russia's Udmurt Republic.
It was reported earlier that nine people were killed and about 20 others wounded in the shooting.
The shooter has committed suicide and his body has been found, the committee said, adding that he was wearing a black T-shirt with Nazi symbols and a balaclava, and his identity remains unclear as he had no documents with him.
BREAKING �� Gunman opens fire at school in Russia’s city of Izhevsk. at least six killed and 20 wounded in the shootingpic.twitter.com/MdovFRc1Av
The school has 982 students and 80 teachers, and they have been evacuated. The governor of the Udmurt Republic declared three days of mourning beginning on Monday.
This attack came a few days after the first anniversary of a similar shooting on the Perm University campus, in which six people were killed and 24 wounded on Sept. 20, 2021.
On that occasion, the attacker was identified as a former student of the center and was injured when security forces intervened to arrest him
President Vladimir Putin's party, United Russia, won the three-day regional elections held in that country, which means a high level of support both for the current president and for the decisions he makes. pic.twitter.com/7DtGmnctGL