The department said that they conducted searches, seized a hunting ticket, as well as documents for weapons and "other materials of importance for the investigation."
"Also, the investigation is checking the procedure for obtaining permission for the suspects to purchase hunting weapons, and the recordings from CCTV cameras are being seized," the message on the UK website says.
On the morning of September 20, a student opened fire from a hunting smooth-bore rifle in the building of the Perm university.
Six people were killed.
During the arrest, the offender resisted and was wounded.
According to the Ministry of Health, the total number of victims of the shooting in Perm was 43 people.