A suspected Islamic State militant blew himself up in southeastern Turkey, near the Syrian border, during a police raid late Saturday, injuring four officers, one seriously, media reports said.
The militant activated explosives attached to his body when police raided an apartment building in the town of Gaziantep, the Dogan news agency said.
The raid was conducted as part of the investigation into a double suicide bombing on October 10 in Ankara that killed 102 activists assembling for a peace rally, Dogan said.
The latest attack comes as world leaders gathered in the Mediterranean resort city of Antalya, 300 kilometres (186 miles) to the west, for a G20 summit where the fight against terrorism will be a major discussion point, following this weekend's Paris attacks.
On Saturday, four suspected IS militants travelling by car were shot dead by the army when they approached a military checkpoint in Gaziantep.
Also on Saturday, the police arrested seven suspected IS members in Ankara, state-run Anatolia news agency reported.
The same day, IS claimed responsibility for the gun and suicide attacks that killed 129 people across Paris late Friday.