Turkish police have detained around 30 Islamic State (IS) suspects in a dawn raid, a day after a deadly shootout with a group of the jihadists, local media reports say.

Police launched simultaneous operations against IS cell houses in the conservative central Anatolian city of Konya, the Dogan news agency reported, adding that the operation was ongoing.

Two policemen and seven IS suspects were killed on Monday in a gun battle in the Kurdish majority city of Diyarbakir in the south-east of the country.

Police have been hunting down IS militants since the Ankara double-suicide bombings killed 102 people at a pro-Kurdish peace rally in the heart of the capital on October 10.

Turkey has ramped up operations against IS extremists ahead of elections this Sunday, in the face of opposition criticism that the government has been too soft on the self-proclaimed "caliphate" in neighbouring Syria.

Turkish president Recep Tayyip Erdogan has vowed to press ahead with operations against all "terrorists" including IS and members of the outlawed Kurdistan Workers' Party (PKK).

Long criticised by its Western allies for not doing enough to stem the rise of the extremist jihadist group, Turkey launched air strikes against IS targets in Syria after a deadly bombing on a border town in July.

But most of the firepower was concentrated on PKK fighters based in northern Iraq, breaking a 2013 truce between Ankara and the rebels.

Turkish military strikes Kurdish militia

Meanwhile, Turkish prime minister Ahmet Davutoglu said the military struck Kurdish fighters across the border in northern Syria "twice" on Monday.

Mr Davutoglu said Turkey had warned members of the Democratic Union Party (PYD) not to cross to the west of the Euphrates river and if they did, Turkey would attack.

Turkey regards the PYD as the Syrian offshoot of the outlawed PKK which has waged a bloody insurgency in the Kurdish dominated southeast since 1984.

Syrian Kurdish fighters accused the Turkish military of attacking their positions near Tal Abyad where the Kurdish militia force expelled the IS group after fierce clashes in June.

Kurdish fighters control large parts of northern Syria on the Turkish border, where they have for months engaged in bitter fighting with IS jihadists.

AFP