U.S. President Barack Obama on Monday congratulated his counterpart Recep Tayyip Erdogan on recent elections that extended the Turkish president's term in office.

Days before traveling to Turkey for a G20 summit, Obama spoke to Erdogan to "congratulate the Turkish people on the November 1 elections" and discuss the summit, the White House said.

Turkish President Recep Tayyip Erdogan on Wednesday called for a new constitution after his ruling Justice and Development Party's (AKP) weekend triumph at the ballot box.

"Solving the issue of a new constitution was one of the most important messages of November 1," he said in a televised speech in Ankara.

Turkey will make a leap forward if it adopts a system strengthening the powers of strongman President Recep Tayyip Erdogan after his ruling party's election win, his spokesman said on Wednesday.

"We have a clear opinion that the presidential system will help Turkey jump to another league," Ibrahim Kalin told reporters in Ankara, signaling that the issue could be put to the Turkish people in a referendum.

He once wanted to "wipe out" Twitter and compared social media to a "murderer's knife," but President Recep Tayyip Erdogan couldn't resist sending a tweet on Monday to celebrate his party's election victory. 

The famously tech-phobic Erdogan issued a series of tweets on his official account after the Justice and Development Party (AKP) he co-founded reclaimed its parliamentary majority in Sunday's vote.

Germany on Monday welcomed Turkey's peaceful weekend election won by President Recep Tayyip Erdogan's party and urged his government to rule "in the spirit of national unity".

Chancellor Angela Merkel's chief spokesman Steffen Seibert praised the peaceful election process and high voter turnout, which he said proved "how deeply the Turkish people are invested in the democratic process".

A week ahead of Turkey's second election in five months, President Recep Tayyip Erdogan's party is working overtime to try to reclaim its parliamentary majority, in a climate of tension fueled by the Ankara attacks and the reignited Kurdish conflict.

Prime Minister Ahmet Davutoglu, leader of the dominant Justice and Development Party (AKP), is holding a mass campaign rally in Istanbul on Sunday, hoping to drum up enough support to defy the opinion polls that predict a replay of the June vote.

A 15-year-old schoolboy has been detained by police in Turkey for allegedly "insulting" President Recep Tayyip Erdogan, local media reports said Thursday.

The teenager, identified by the initials U. E., spent Wednesday night in a police station after being stopped by officers outside an Internet cafe, Cihan news agency said.

Turkish President Recep Tayyip Erdogan on Friday mocked the EU's contribution to easing the Syrian refugee crisis, saying the bloc had been awarded the Nobel Peace Prize for accepting just a tiny number of asylum-seekers.

Speaking after Turkey and the EU agreed a plan for improving the handling of the refugee crisis, Erdogan also questioned whether Brussels treated Ankara's long standing membership application seriously.

U.S. President Barack Obama and Turkish counterpart Recep Tayyip Erdogan on Thursday vowed to step up the fight against the Islamic State group and strengthen Syria’s moderate opposition.

Speaking by telephone in the wake of Saturday's bomb attack in Ankara that killed 99 people, and weeks before Obama travels to Turkey for a G20 summit, they discussed sometimes difficult cooperation on countering Islamic State in Syria.

The Turkish interior ministry on Wednesday fired Ankara's top police chief and two other officials as President Recep Tayyip Erdogan admitted security shortcomings may have led to a double suicide bombing in the capital that killed 97 people.

There has been growing anger against Erdogan and the government for alleged security lapses over the worst attack in modern Turkey's history in which two suicide bombers blew themselves up in a crowd of peace activists on Saturday.