The security service of Ukraine is investigating the case against the 53 Inhabitants of Russia, and among them, six cases for espionage, said Wednesday at a press conference, the head investigative Department of SBU Vasily Vovk. "Fifty-3 RF citizen prosecuted, 47 of them for terrorist activities, for six espionage ", - quoted him as saying. Vovk said that two of the six suspects in espionage has been sentenced to nine and 10 years of punishment, respectively.