Ankara's Deputy State Attorney Doğan Öz then investigated on relationship between Alparslan Türkeş's Nationalist Movement Party (MHP) the Special Warfare Department and violent incidents of the 1970s. Doğan Öz's report stated that "Military and civilian security forces are behind all this work." It also stated that the National Intelligence Organization was complicit, and that "all these activities guided by MHP members and cadres." The attorney Doğan Öz was assassinated on March 24, 1978. İbrahim Çiftçi, a member of the Grey Wolves, confessed to the crime, but his conviction was overturned by the military judicial system.