"He let two children go. Presumably, he has one more hostage," the spokesman said.
The spokesman also said that security officers started an assault at the house where the man barricaded himself.
According to the Russian Interior Ministry’s main department, the man opened fire and threw two grenades at security officers when they arrived at the house to verify information on a local man’s involvement in illegal arms trafficking, presented a court order to the man’s wife and entered the site.
The Russian Investigative Committee has launched a criminal probe against a 61-year-old man who opened fire on security officers in the Moscow Region earlier on Tuesday, Olga Vradiy, a senior aide to the chief of the committee's regional department, said.
"Investigative agencies of the Russian Investigative Committee's main directorate for the Moscow Region have opened a criminal probe into encroachment on the life on law enforcement agencies officers (Article 317 of the Russian Federation's criminal code)," Vradiy said.