Among those accused are Cetin Dogan, the former head of Turkey's First Army, and Ibrahim Firtina, a retired air force commander, both of whom were first arrested early this year.

'Overthrowing the government'

The indictment said the coup was created by Dogan on the grounds that "the Turkish state had begun to come under the influence of anti-secular and reactionary elements" after the election of the AKP, Anatolia said.

Ozden Ornek, a former navy chief admiral, Halil Ibrahim Firtina, a former air force commander general, and the former number two of the general staff, retired general Ergin Saygun, were also among those charged.

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The indictment accused all the defendants of "attempting to overthrow the government or prevent it from carrying out its duties through the use of force and violence", a crime punishable by up to 20 years in jail, Anatolia said.

"The evidence at hand shows that (the coup planners) ... prepared a very comprehensive and detailed plan to oust a democratically elected government through undemocratic means," the news agency quoted the indictment as saying.

No date has been set for a trial.

Turkey's military, the second largest in NATO, has overthrown three governments since 1960.

It has denied such a plot, saying the documents were from a military training seminar during which officers simulated an internal strife scenario.

More than 400 people, including pro-secular academics, journalists and politicians and soldiers, are already on trial over separate charges of plotting to bring down the government.