"The accused denies his guilt, believes that he acted correctly, did not deviate from the route," RIA Novosti quoted Kiselyov as saying.
He added that the defendant is giving conflicting testimony.
According to Kiselyov, the group's route, registered with the Ministry of Emergency Situations, assumed movement on flat terrain, the children were not provided with avalanche safety equipment.
According to the investigation, the accused had no skiing experience, decided to save time and take a shortcut, deviated from the route and brought the children to a mountainous area.
On March 25, the head of a tourist group of children caught in a snow block in the mountains of the Murmansk region was arrested.
Earlier it was reported about the initiation of a criminal case on negligence after an emergency with a tourist group from St. Petersburg, caught in an avalanche in the Khibiny.
The UK said that the organizers of the tourist group, before leaving, did not take into account the difficult terrain, the state and volume of the snow cover.
On the evening of March 22, an avalanche occurred in the Khibiny in the Murmansk region.
The tourist group from St. Petersburg, which ended up in the area of a snow block, consisted of 13 children aged from ten to 15 years and three adults.
A girl born in 2008 after an avalanche was under the snow and subsequently died.