Turkey's ruling party is set to replace Prime Minister Ahmet Davutoglu at an extraordinary congress in the coming weeks, officials said on Wednesday, May 3, signaling the end of his term as premier and plunging the country into political uncertainty, Reuters reports.

The decision, confirmed to Reuters by five AK Party officials, came after a meeting of more than 1-1/2 hours between Davutoglu and President Recep Tayyip Erdogan that followed weeks of increasingly public tension between the two men.

Erdogan wants an executive presidency in Turkey to replace the current parliamentary system, a plan for which Davutoglu has offered only lukewarm support. His departure is likely to pave the way for a successor more willing to back Erdogan's ambition of changing the constitution and strengthening the presidency, a move opponents say will herald growing authoritarianism.

"The president and prime minister reached agreement on the congress ... I don't think Davutoglu will be a candidate again," one of the officials told Reuters.

The leader of the AKP, which has governed Turkey since 2002, also serves as prime minister. Davutoglu's likely departure looms as Turkey faces mounting security challenges, with a Kurdish insurgency in its southeast and the spillover of the war in Syria on its southern border.

An AKP official said the congress would be held as soon as May 21 and no later than June 6, the first day of the Islamic holy month of Ramadan, and that Erdogan was adamant there should be no vacuum of power at the head of government.

Three sources close to the presidency said possible successors included government spokesman Numan Kurtulmus and Justice Minister Bekir Bozdag. Transport Minister Binali Yildirim and Energy Minister Berat Albayrak, Erdogan's son-in-law, had also been touted as possible names, they said.