Nerv Паранормальное
Nerv is a Russian paranormal team, who one day went investigating in a haunted hotel and they find out that more than one poltergeist may exist.
I originally found the team while watching Travel Channel Paranormal Caught on Camera.
Looks like I may have found another Russian Explorator and/or Investigator. The YouTube video link is what I believe to be the first of series of videos of their investigation.