Turkish Prime Minister Recep Tayyip Erdogan lost his temper during a ceremony Saturday, heckling a speaker who accused him of authoritarian tendencies before walking out of the room in fury.

The official ceremony, which was aired live on Turkish television, saw a visibly enraged Erdogan interrupt the head of the bar association Metin Feyzioglu, whose lengthy speech took several jabs at the government's performance.

A Turkish charity said on Friday one person was killed and two hurt near the Syrian city of Aleppo when Syrian warplanes hit two trucks carrying aid on its behalf. 

Humanitarian Relief Foundation (IHH) said that trucks carrying flour and blankets were caught in the middle of an air campaign late Thursday by the Syrian Air Force targeting rebel strongholds in the divided city. 

A Turkish court has freed three journalists and five others accused of ties to a banned Marxist group after eight years of pre-trial custody, pending an appeal in their trial, a journalists' union said Thursday.

An Istanbul court freed the defendants under a new law passed in March reducing the detention limit for suspects on trial from 10 years to five years, the Turkish Journalists' Union told AFP.

Turkey has decided to place a firm order with U.S. aerospace giant Lockheed Martin for two F-35 stealth fighter jets, a defense source said on Wednesday.

"Two orders will be placed," the source told Agence France Presse on condition of anonymity, adding that they were due to be delivered in 2015.

Turkey's parliament reconvened on Monday with four former ministers of beleaguered Prime Minister Recep Tayyip Erdogan expected to defend themselves against corruption allegations.

The main opposition Republican People's Party (CHP) demanded the debate, once postponed, over a scandal that has spiraled into the most serious challenge yet to Erdogan's 11 years in power.

At least 22 migrants including four children drowned in the Aegean Sea on Monday after a yacht and a dinghy carrying them towards Greek shores capsized, coastguard officials said.

Eighteen people were found dead on board the 10-meter (33-foot) yacht after it was towed to shore, the coastguard said, adding that another four bodies were recovered at sea.

Turkish prosecutors on Friday dropped a case against 60 people, including the son of a former minister, in a corruption probe that has rocked the Islamic-rooted government, local media said.

An Istanbul prosecutor handling the probe into graft in Turkey's housing agency TOKI decided not to take the suspects to court, citing "lack of evidence" for his decision.

Riot police in Istanbul used water cannon and tear gas Thursday against thousands of protesters who tried to defy a May Day ban on demonstrations, injuring at least 50 people.

After a final warning, hundreds of riot police moved on the crowd seeking to breach the barricades leading to Taksim Square, declared off limits to Labour Day demonstrators as the epicenter of anti-government protests in recent months.

Thousands of people are expected to defy a government ban to gather on Istanbul's highly symbolic Taksim Square Thursday, a year after May Day clashes helped launch a nationwide protest movement.

Prime Minister Recep Tayyip Erdogan has warned protesters to "give up hopes" of meeting on Taksim, a traditional and symbolic rallying point, but activists have vowed to ignore the ban and a massive police presence, raising tensions to a fever-pitch ahead of the workers' holiday.

Turkish prosecutors have launched an investigation into a U.S.-based cleric on charges of attempting a coup after the government accused him of masterminding a vast corruption scandal, an official said Wednesday.

Culture Minister Omer Celik told the private NTV television network that the Ankara chief prosecutor's office had launched the probe after several complaints against Fetullah Gulen, a former ruling-party ally whom Prime Minister Recep Tayyip Erdogan accuses of running a "parallel state".