Original sentence: He is further said to have helped helped Mehmet Ali Ağca murder the left-wing newspaper editor Abdi İpekçi on January 1, 1979, in Istanbul, and helped Ağca escape from an Istanbul military prison, in 1979.He was instrumental in destroying the Armenian Secret Army for the Liberation of Armenia (ASALA).Çatlı is claimed to be responsible, along with Haluk Kırcı, of the October 9, 1978 Bahçelievler Massacre during which seven university students, members of the Turkish Workers' Party, were murdered
Edited sentence: According to reporter Lucy Komisar, he helped Mehmet Ali Ağca murder the left-wing newspaper editor Abdi İpekçi on January 1, 1979, in Istanbul.Alparslan Türkeş, leader of the Nationalist Movement Party (MHP) and of the Grey Wolves.Caught due to an informant, Mehmet Ali Ağca was then sentenced to life in prison.Daniele Ganser, NATO's Secret Armies: Operation GLADIO and Terrorism in Western Europe  ISBN 0714685003 (a quick resume available here).Gladio "stay-behind" NATO clandestine structure.He soon escaped, with the help of Grey Wolves, and fled to Bulgaria.He was responsible, along with Haluk Kırcı, of the October 9, 1978 Bahçelievler Massacre during which seven university students, members of the Turkish Workers' Party, were murdered.Mehmet Ali Ağca, who tried to murder the Pope in 1981.Member of Gladio "stay-behind" NATO clandestine network, he was instrumental in destroying the Armenian Secret Army for the Liberation of Armenia (ASALA), and worked with the cooperation of the Turkish state and Gladio, NATO's paramilitary anticommunist organization during the Cold War.Various documents on ISN website, hosted by ETH Zurich (Report by the SIFAR (Italian Military Secret Service) on Operation Gladio; US Field Manual; Report by Giulio Andreotti; Parliamentary Investigation into the Swiss Defense Ministry; various FOIA requests to the CIA; Parliamentary Investigation report in Belgium & in Italy...)