The conflict between them ended with firing.
According to the Interfax agency, the quarrel was caused by the conditions of the attacker's communication with the children. According to the source of the agency, he opened fire from traumatic weapons during a quarrel with a cohabitant. Presumably, she and two children died.
Information from the scene is still controversial. According to some reports, the shooter died during the storming of the apartment by security forces, according to others - he committed suicide, other sources say that he is alive, but the grandmother of the children could also die.
About the death of the shooter and two children and reports TASS. The Echo of Moscow radio station reported that both women, a minor girl and a shooter, were killed. A RBC source at the Main Department of the Ministry of Internal Affairs in Moscow said that the children are three and four years old. A criminal case has been instituted on the fact of the incident.
The TASS agency reports that a young man who is suspected of killing three people in a house on Priorov Street and died himself was previously tried for theft, but somehow got access to weapons. His name is Sevastyan Putintsev. The entrance camera recorded how he entered the entrance with a hunting carbine in a case. Presumably, from it the murder was committed.