Several people have been injured in an explosion at a police compound in the Turkish city of Diyarbakir.

The blast could be heard in several areas of the city, according to an AFP journalist at the scene, with emergency workers reporting at least four people wounded.

One person is trapped beneath the debris and has yet to be rescued, Interior Minister Suleyman Soylu said.

Image: Turkey is on edge after a number of bomb attacks

Ambulances and police rushed to the scene in the mainly Kurdish city's Baglar district, where thick smoke was seen rising into the air.

Mr Soylu told CNN Turk the explosion happened during the repair of a vehicle in the compound, while a police source told Reuters the blast had caused part of the roof to collapse.


While the cause is being investigated, Mr Soylu suggested that the explosion was caused by repair work and was not the result of an attack.

Image: Crowds and an ambulance pictured near the scene

One of the injured is reported to be in a critical condition.

Turkey is on edge after a number of bomb attacks carried out by Kurdish rebels or Islamic State militants in recent years.

Diyarbakir is the largest city in the southeast of Turkey, where Kurdistan Workers Party (PKK) militants have fought an insurgency against the state for more than three decades in a bid for autonomy.

The PKK is designated as a terror group by Turkey, the US and the EU.