However, the swift justice, including 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. He is a former Erdogan ally turned bitter foe who has been put on trial in absentia in Turkey, where the government has labeled his movement a terrorist organization. The state-run Anadolu agency reported on Monday that Mr. Ozturk had confessed, though other outlets later contradicted the story.
"I have spoken to President Recep Tayyip Erdoğan, in the aftermath of the attempted coup in Turkey", Stoltenberg said in a statement Monday.
However in Berlin on Monday, German Chancellor Angela Merkel's spokesman said Turkey's bid on joining the European Union would end if Ankara restored the death penalty.
Turkey has detained more than 7,500 suspects involved in the coup plot, the prime minister said on Monday.
The interior ministry said almost 9,000 people, including nearly 8,000 police but also municipal governors and other officials, had also been dismissed in a widening purge.
"The near-term economic impact of Friday night's attempted coup will depend on the length and severity of market dislocation, but at the very least the economy is likely to suffer a period of slower growth, and the lira will remain under pressure", said William Jackson, senior emerging markets economist at Capital Economics. More than 260 people where killed during the coup attempt.
The EU commissioner dealing with Turkey's long-stalled bid for membership of the bloc said it appeared that the government had already prepared a list before the coup of people to be rounded up.
He added: "I am starting to feel that we are ignoring the fact that the parliament was hit 11 times by hijacked F16s".
As the total number of military and civilians detained, arrested or suspended reached more than 15,000, Secretary of State John F. Kerry "firmly" urged Turkey to maintain its democratic institutions and the rule of law.
The Council of Europe joined the criticism, with its panel of constitutional experts saying: "Arrests and mass sackings of judges are not an acceptable way of restoring democracy".
Fitch Ratings said the coup bid highlighted the political risks to the ratings on Turkey's ability to pay back its sovereign debts.
The coup attempt unleashed appalling violence and those responsible for unlawful killings and other human rights abuses must be brought to justice, but cracking down on dissent and threatening to bring back the death penalty are not justice. "The leaders will have to come together and discuss it".
If Turkey reintroduces the death penalty, it won't be joining the European Union, according to EU foreign policy chief Federica Mogherini. "Whether I die in my bed or in prison, I don't care", said Gulen.
Turkey's treatment of the coup suspects has alarmed its allies especially after the suspects were paraded before the media and shown being subjected to rough treatment.
Meanwhile, a Greek court will on Thursday decide the fate of eight Turkish military officers who fled across the border by helicopter after the coup, with Ankara seeking their extradition.
The turbulence has raised concern about the stability of Turkey, which is part of the global coalition fighting Islamic State militants in Syria.
Global financial exchange markets were still open when the coup erupted late Friday and fears of prolonged political turmoil in a key emerging market prompted a five-percent crash in the lira against the dollar.
"We have a mutual agreement of extradition of criminals", he told the network.
The preacher's followers have a powerful presence in Turkish society, including the media, police and judiciary, and Erdogan has long accused him of running a "parallel state" in Turkey.