A Turkish soldier was killed in southeastern Diyarbakir province in a new attack blamed on the rebel Kurdistan Workers' Party (PKK), a security source said.

Sergeant Mehmet Ali Sarak, 25, came under fire from PKK militants with automatic rifles while on his way to his army base in the Silvan district of Diyarbakir, the source told AFP on condition of anonymity.

Turkish Prime Minister Ahmet Davutoglu appointed two new cabinet ministers to replace two Kurdish lawmakers who resigned from the interim government amid a flare-up of violence between Kurdish rebels and the army.

EU Affairs Minister Ali Haydar Konca and Development Minister Muslum Dogan resigned on Tuesday after accusing Turkey's government of promoting a "logic of war", two months after a 2013 ceasefire with Kurdish rebels fell apart.

European Union leaders, who will gather for an emergency summit on the migration crisis on Wednesday, are expected to give extra funding to Turkey, Jordan, Lebanon and U.N. agencies.

The leaders are hoping that the funding would help stop the flow of refugees to Europe.

Australia's new Prime Minister Malcolm Turnbull Wednesday admitted he had concerns about asylum seekers being held in Pacific island camps, but gave no indication of immediate change to the hardline policy.

All asylum seekers coming by boat to Australia are sent to camps in Papua New Guinea and Nauru and ultimately denied resettlement in Australia even if they are found to be genuine refugees.

Two Kurdish ministers accused Turkey's government of promoting a "logic of war" as they quit the cabinet on Tuesday, two months after the resumption of fighting between the army and Kurdish rebels.

EU Affairs Minister Ali Haydar Konca and Development Minister Muslum Dogan said the state's two-month-old offensive against the militant Kurdistan Workers Party (PKK) had created a "hellish" situation "especially in the Kurdish cities."

About 70 U.S.-trained Syrian rebels have graduated from America's much-criticized "train-and-equip" program and are fighting in Syria, military officials confirmed Monday. 

AFP reported Sunday that the rebels had crossed from Turkey into northern Syria, where they were expected to fight Islamic State jihadists.

A Turkish policeman missed his own wedding party after being denied permission to leave his station in the southeast, where Kurdish rebels have killed scores of security force members, local media reported Monday.

Ahmet Karavelioglu, 25, had received the green light from his paramilitary police unit to attend the celebration in southern Osmaniye province on September 18, Dogan news agency reported.

Turkish war planes pounded militant Kurdistan Workers Party (PKK) positions in the southeast during a raid, killing five suspected PKK members, the army said Monday. 

F-16 fighter jets destroyed fuel and ammunition depots in the remote Hakkari province, on the border with Iraq, the general staff said in a statement on its website.

Turkey's prime minister urged voters Monday to back the ruling party in November polls "so that peace returns to Turkey", where the army is engaged in a bloody battle with Kurdish militants.

Ahmet Davutoglu sought to rally the faithful at a mass gathering of the ruling Justice and Development Party (AKP) in Ankara with a rousing speech to present the party's candidates in snap November 1 polls.

A growing number of "disillusioned" Islamic State fighters are defecting from the jihadist group and could be used by governments to deter potential recruits, a report published Monday said.

At least 58 people have left the group and publicly spoken about their defection since January 2014, according to the report by the International Centre for the Study of Radicalization and Political Violence (ISCR) at King's College London.