The Latest: EU poised to back rule of law in Turkey

Protesters gather in Taksim Square in Istanbul, Sunday, July 17, 2016. The Turkish government accelerated its crackdown on alleged plotters of the failed coup against President Recep Tayyip Erdogan, with the justice minister saying Sunday that 6,000 people had been detained in the investigation, including three of the country's top generals and hundreds of soldiers. (AP Photo/Petros Giannakouris) (The Associated Press)

A Turkish police special forces APC arrives at the scene where the Ankara governor's office says a military officer was detained after he shot and killed the driver of a vehicle that he hijacked, at Ulus district in Ankara, Turkey, Monday, July 18, 2016. In a brief statement Monday, the governor's office said the officer whom it described as being mentally disturbed was caught by the security forces following a brief shoot out. (AP Photo/Hussein Malla) (The Associated Press)

A man loads clothes onto a barrow in the Grand bazaar in Istanbul, Monday, July 18, 2016. The European Union and the United States expressed alarm Monday with Turkey's response to a failed coup, telling the NATO member and EU aspirant that it must uphold democracy and human rights as it pursues the military officers and anyone else involved in the plot.(AP Photo/Petros Giannakouris) (The Associated Press)

The Latest on the attempted military coup in Turkey (all times local):

9:45 a.m.

The European Union's foreign policy chief says foreign ministers on Monday will send a "strong message" that the rule of law and the democratic system of checks and balances must be respected in Turkey following the failure of a military putsch.

Federica Mogherini, the EU's high representative for foreign affairs, spoke before a meeting of the bloc's foreign affairs ministers in Brussels. The ministers will also be meeting for breakfast with U.S. Secretary of State John Kerry.

Belgian Foreign Minister Didier Reynders says Turkish authorities' reaction to the failed coup needs to be "proportionate." He says he was alarmed by the arrests of judges and calls for reinstatement of the death penalty against coup participants.

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9:30 a.m.

Warplanes have patrolled Turkey's skies following a failed coup, a sign that authorities fear the threat against the government is not yet over.

A senior official said Monday that F-16 jets guarded the Turkish airspace overnight, after a faction within the military launched an attempted coup late Friday against President Recep Tayyip Erdogan. The official spoke on condition of anonymity in line with government rules.

The coup plotters sent warplanes firing on key government installations and tanks rolling into major cities, but the rebellion was quashed by loyal government forces and masses of civilians who took to the streets. At least 294 people were killed and more than 1,400 wounded.

The state-run news agency, Anadolu, said Erdogan ordered the overnight patrol by F-16s.