Turkish police shot dead a man and a woman belonging to a left-wing "terrorist" organisation who attacked a checkpoint outside a courthouse in Istanbul, wounding six people, officials said.
Interior Minister Ali Erlikaya said the attackers were members of the Revolutionary People's Liberation Party-Front (DHKP-C), a far-left group that has periodically carried out attacks in Turkey since the 1980s.
"While the terrorists who tried to attack were neutralised, six people, including three policemen and three civilians, were injured," Interior Minister Ali Erlikaya said in a statement on social media.
"While the terrorists who tried to attack were neutralized, six people, including three police officers and three civilians, were injured," Erlikaya said in a statement on social media.
Turkey has begun to emerge from a period of violence that began a decade ago when it was hit by repeated bombings and other attacks linked to jihadist and Kurdish militants.
Although these attacks have largely subsided, Istanbul and the capital Ankara remain on high alert.
Last month, one person was shot dead by two gunmen who opened fire in a Catholic church in Istanbul. Jihadists from the Islamic State group claimed responsibility for the attack.
In October, two assailants wounded two policemen in an attack in a government district in the capital Ankara claimed by Kurdish militants.
In response, Turkey has stepped up air strikes against Kurdish targets in Syria and Iraq. /BGNES