text: A British man has been arrested in Turkey after an operation against a far-left militant group that left a prosecutor dead. The British national, of Polish origin but who has not been named, was arrested on Saturday as part of an operation against the Revolutionary People's Liberation Party-Front, according to reports. Members of the banned leftist group - known as the DHKP-C - took senior Turkish prosecutor Mehmet Selim Kiraz hostage last week. Both the prosecutor and the hostage takers were killed after a police shoot-out. Scroll down for video . Sick: Members of the banned leftist group - known as the DHKP-C - took senior Turkish prosecutor Mehmet Selim Kiraz hostage last week. Both the prosecutor and the hostage takers were killed after a police shoot-out . Murderers: A handout photo provided by the Istanbul head prosecutor shows two hostage takers seconds after they entered the Istanbul Court House where Mehmet Selim Kiraz was later killed . A Foreign Office spokeswoman said this morning: 'I can confirm that a British national has been arrested in Turkey and that we are offering consular assistance.' The DHKP-C is listed as a terrorist organisation by the US, EU and Turkey. Two members of the DHKP-C and the prosecutor they held hostage inside a courthouse in Istanbul died after the shootout. Police had negotiated with the gunmen for six hours before the violent end to the hostage situation, according to Istanbul police chief Selami Altinok. Pictures emerged of the hostage takers holding a gun to the prosecutor's head during the siege. Sadness: Thousands of people attended last Wednesday's funeral ceremony for Turkish prosecutor Mehmet Selim Kiraz inside the main courthouse where he died the previous day . Grief:  Mehmet Selim Kiraz was shot in the head during the stand-off and rushed to hospital where doctors tried in vain to save his life. Pictured is his funeral the following day . Police had negotiated with the gunmen for six hours before the violent end to the hostage situation. Pictured are the thousands of people who turned out for Mehmet Selim Kiraz's funeral . Turkey has blocked access to Twitter and YouTube after they refused a request to remove pictures of Kiraz held during the armed siege last week. Before imposing the blocks on the websites, Turkish authorities had tried to prevent newspapers printing images taken during the siege last week. The newspapers were accused by the government of 'spreading terrorist propaganda' in sharing the images of the hostage-taking. The prosecutor, identified by state television as Kiraz, was shot in the head during the stand-off and rushed to hospital where doctors tried to save his life. Turkish prime minister Ahmet Davutoglu and hospital officials later announced he had died. Private news agency Dogan reported police special forces had entered the building, which was evacuated. It was not clear how the assailants managed to get arms into the courthouse. Mr Kiraz was the prosecutor investigating the death of a teenager who was hit by a police gas canister fired during nationwide anti-government protests in 2013. The DHKP-C, which seeks a socialist state, has carried out sporadic attacks, including a suicide bombing on the US Embassy in 2013 that killed a security guard. The group was more active in the 1970s. Another attack: Just one day after the death of Kiraz, a woman armed with guns and hand grenades was shot dead as she tried to attack Istanbul's police headquarters . Police HQ: Television footage showed police sealing off the street in the central Aksaray neighbourhood . Armed: The woman was carrying a rifle, two hand grenades and a pistol. Local media said a man was also held . Just one day after the death of Kiraz, a woman armed with guns and hand grenades was shot dead as she tried to attack Istanbul's police headquarters. A picture of the red-haired woman lying on the ground with a rifle strapped to her body and a handgun by her side has emerged and television footage showed police sealing off the street in the central Aksaray neighbourhood. 'The Istanbul police headquarters on Vatan street was targeted by rifle fire and a female terrorist was killed in the clash,' the Istanbul governor's office said in a statement at the time. The woman was carrying a rifle, two hand grenades and one pistol, it said. Local media said a man had also been detained. On the same day police separately detained a gunman who entered an Istanbul branch of the ruling AK Party and hung from its window a Turkish flag with the emblem of a sword added. It was not immediately clear whether any of the attacks were linked, but Prime Minister Davutoglu warned of the risk of 'provocations' and attempts to cause chaos ahead of June's national election.
target: Man is a British national of Polish origin, but has not yet been identified .
  He was arrested on Saturday as part of an operation against the DHKP-C .
  Banned leftist militant group took senior Turkish prosecutor Mehmet Selim Kiraz hostage in Istanbul last week .
  Both Kiraz and hostage takers were killed in the resulting police shoot-out .