Greek Prime Minister Alexis Tsipras has been informed by the head of the Greek secret services Yiannis Roubatis about the attempted military coup in Turkey, according to reports late Friday.
Reports said Tsipras requested Roubatis to also brief conservative opposition leader Kyriakos Mitsotakis about the situation.
The premier has contacted Defense Minister Panos Kammenos and Hellenic Armed Forces General Staff (GEETHA) chief Admiral Evangelos Apostolakis, according to the same reports.
Government officials said they were closely monitoring developments in Turkey.
Earlier on Friday Prime Minister Binali Yildirim said that a group within Turkey's military had attempted to overthrow the government and security forces had been called in to "do what is necessary."
"Some people illegally undertook an illegal action outside of the chain of command," Yildirim said in comments broadcast by private channel NTV.
"The government elected by the people remains in charge. This government will only go when the people say so."
Meanwhile, a statement from the military group read out on NTV said: "The power in the country has been seized in its entirety."