Nearly 20,000 Turkish officials have been detained or suspended since the weekend's failed coup attempt.
Turkey has purged its police after rounding up thousands of soldiers in the wake of a failed military coup, and says it could reconsider its friendship with the United States unless Washington hands over a cleric Ankara blames for the putsch.
Nearly 20,000 officials from the police, civil service, judiciary and army have been detained or suspended since Friday night's coup, in which more than 200 people were killed when a faction of the armed forces tried to seize power.
The broad crackdown and calls to reinstate the death penalty for plotters drew concern from Western allies who said Ankara must uphold the rule of law in the country, a NATO member that is Washington's most powerful Muslim ally.
Some voiced concern President Tayyip Erdogan was using the opportunity to consolidate his power and further a process of stifling dissent which has already caused tensions with Europe.
A senior security official told Reuters that 8000 police officers, including in the capital Ankara and the biggest city Istanbul, had been removed from their posts on suspicion of links to Friday's abortive coup.
About 1500 finance ministry officials had been suspended, a ministry official said, and CNN Turk said 30 governors and more than 50 high-ranking civil servants had been dismissed.
Annual leave was suspended for more than 3 million civil servants, while close to 3000 judges and prosecutors have been suspended.
Prime Minister Binali Yildirim said 7543 people had so far been detained, including 6038 soldiers.
Some were shown in photographs stripped to their underpants and handcuffed on the floors of police buses and a sports hall.
Officials in Ankara say former air force chief Akin Ozturk was a co-leader of the coup. The state-run Anadolu agency said on Monday he had confessed, but private broadcaster Haberturk contradicted this, saying he had told prosecutors he tried to prevent the attempted putsch.
Ankara says it was masterminded by Gulen, a cleric based in the United States who has a wide following in Turkey and denies any involvement.
Ankara has demanded Washington hand Gulen over. Washington says it is prepared to extradite him but only if Turkey provides evidence linking him to crime. Yildirim rejected that demand.
"We would be disappointed if our (American) friends told us to present proof even though members of the assassin organisation are trying to destroy an elected government under the directions of that person," Yildirim said.
"At this stage there could even be a questioning of our friendship," Yildirim added.
Yildirim said 232 people were killed in Friday night's violence, 208 of them civilians, police and loyalist soldiers, and a further 24 coup plotters. Officials previously said the overall death toll was more than 290.
The bloodshed shocked the nation of almost 80 million, where the army last used force to stage a successful coup more than 30 years ago, and shattered fragile confidence in the stability of a NATO member state already rocked by Islamic State suicide bombings and an insurgency by Kurdish militants.
NTV television reported that Cemil Candas, deputy mayor of Istanbul's Sisli district, was in critical condition after being shot in the head by an assailant in his office on Monday.
It was not immediately clear whether the attack was connected to the failed coup.
Sisli district is controlled by an opposition party which, like other groups in parliament, opposed the coup.
Western countries said they supported Erdogan's government but Ankara should abide by the rule of law.
"We stand squarely on the side of the elected leadership in Turkey. But we also firmly urge the government of Turkey to maintain calm and stability throughout the country," US Secretary of State Kerry told a news briefing in Brussels where he attended a gathering of European counterparts.
"We will certainly support bringing the perpetrators of the coup to justice but we also caution against a reach that goes well beyond that."
Referring to Gulen, Kerry called on Turkey to furnish evidence "that withstands scrutiny", rather than allegations.