Mahmut Yıldırım (born 1951, Yenidal, Solhan, Bingöl Province), better known as Yeşil (Turkish for "Green"), is a Turkish contract killer. He is wanted for the murders of eight people in Turkey. Among the murders he is accused of is that of Cem Ersever in 1993. Yıldırım, who also used the alias Ahmet Demir, disappeared in 1998 and was the subject of an Interpol Red Notice in 1999. In 2013, security officer Korkut Eken told prosecutors that Yıldırım was still alive.
According to former National Intelligence Organization (MİT) official Mehmet Eymür (speaking in 2011), Yeşil at one time worked for the MİT in Elazığ, but was later let go as he was "out of control." Eymür said that Yeşil later worked with the Turkish Gendarmerie's shadowy JİTEM unit until 1995, and "was given identification cards. Some of his cards even included the title of the 'Prime Ministry Intelligence'.". Eymür said that by 1995 Yeşil had again become too "out of control" and was moved to Ankara, where he was introduced to Eymür (then head of the MİT's Counter-Terrorism Department), with Eymür unaware of Yeşil's status as a wanted criminal. Eymür said he used Yeşil in several operations, but only outside Turkey, and that he was never formally an agent. In 2012, the MİT told prosecutors (in a document leaked to the press) that it had used Yıldırım in four operations, including the one which captured Kurdistan Workers' Party (PKK) commander Şemdin Sakık in 1998. MIT later denied that Yıldırım was an MİT agent, and said it had never used Yıldırım inside Turkey.
In 2006 Mehmet Ali Birand said that JİTEM had asked Yıldırım to assassinate him, but that the operation was later cancelled, after Yıldırım had already investigated Birand's home security. Birand said that MİT chief Şenkal Atasagun was one of those who had told him of this episode.
According to mob boss Sedat Peker speaking in 2011, MİT official Tarık Ümit was "kidnapped in retaliation for Yeşil having kidnapped two Iranian drug dealers [Iranian spies Lazım Esmaeili and Askar Simitko, abducted January 1995] in İstanbul at the time."
Mahmut Yıldırım's son, Murat Yıldırım, published a book about him, Yeşil: Savaşçı ("Green: The Fighter"; Timas Publishing Group, 2009).
- Murat Yıldırım (2009), Yeşil: savaşçı, Timas Publishing Group
- Hakantürk (2006), Yeşil öldü mü?, Akademi TV
- Çetin Ağaşe (2006), Kod adı yeşil, Truva Yayinlari
- "Yeşil, örgüt üyesi", Milliyet, May 10, 1997
- Cebe, Özgur (2008-12-28). "'Yeşil'e mahkeme bulunamıyor". Milliyet. Dogan News Agency. Retrieved 2009-01-06.
- Today's Zaman, 22 December 2011, Parliament reopens case of most notorious state hitman
- Sabah, 7 January 2012, Yeşil yaşıyor?
- Today's Zaman, 16 September 2013, Former MİT officer claims JİTEM hitman ‘Yeşil' still alive
- Today's Zaman, 7 December 2011, Former MİT official Eymür puts blame on former police chief Ağar for extrajudicial killings Archived 2013-12-30 at the Wayback Machine.
- Today's Zaman, 2 December 2011, MİT official says he ‘knows much’ about past atrocities
- Today's Zaman, 11 April 2012, MİT admits to using hitman ‘Yeşil’ four times
- Today's Zaman, 14 May 2006, JITEM Wanted to Kill Birand
- Today's Zaman, 3 November 2011, ‘Shady gang inside state was behind 1990s Kurdish businessmen’s assassinations’,
- Kesler, Musa (2008-12-30). "Eymür'le ters düşen öldü". Milliyet (in Turkish). Retrieved 2009-01-06.
- Kesler, Musa (2008-12-27). "Yeşil'in yanında bir bakan vardı". Milliyet (in Turkish). Retrieved 2009-01-06.
- Today's Zaman, 9 October 2013, JİTEM list provided in Anter murder trial to be kept confidential