A governor's office in Turkey says a suicide bomber caused the explosion that injured five policemen during a raid on a suspected Islamic State militant's hideout near the border with Syria.

The Gaziantep governor's office said Sunday that five policemen were injured in the raid late Saturday. The suicide bomber blew himself up as police broke down the door. The governor's office said two women have been detained in the raid while three children were taken into state protection.

Police seized explosive materials and several machine guns during the raid.

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Turkey's state-run agency says four policemen have been injured in an explosion during a raid on a suspected Islamic State militants' hideout as G-20 leaders began to meet for a summit.

The Anadolu Agency says police late on Saturday raided a fifth-floor apartment believed to be used by an IS cell in Gaziantep city, near the Syrian border. The agency said the explosion occurred as the policemen broke down the door without saying what caused it or if arrests were made.

The raid came hours after Turkish soldiers clashed with IS militants who fired at them near Gaziantep. Four militants were killed.

It was not clear if the two incidents were connected.

G-20 leaders are meeting near the Mediterranean city of Antalya for a summit overshadowed by the Paris attacks.