Istanbul suicide bombing Istiklal
A Turkish police officer stands guard in central Taksim square following a previous suicide-bombing attackBurak Kara/Getty

At least 13 people are reported to have been injured in a car-bomb explosion targeting a police vehicle in the mainly Kurdish-inhabited city centre of Diyarbakir in southeastern Turkey. Turkish state media has reported that several ambulances have been dispatched to the area, with security officials said to be among those injured in the blast.

Turkey has seen several attacks in the country since as part of renewed clashes between government forces and the outlawed Kurdistan Workers' Party (PKK). Earlier in the day, two police officers were killed while attempting to defuse a roadside bomb in the eastern Turkish province of Van, according to the state-run Anadolu Agency said.

At least 18 people, including a police officer, were also killed in similar explosions across southeastern Turkey on 1 May.