Turkish media say prosecutors are set to indict a group of prominentsecular activists suspected of involvement in an alleged coup plotagainst the Islamic-leaning government.

The Turkish broadcasterNTV quotes Istanbul's deputy chief prosecutor Wednesday as sayingauthorities have completed the indictment against suspected members ofthe alleged hardline secularist network Ergenekon. He says thesuspects will be tried on terrorism charges.

Turkish media saythe indictment does not yet include 21 people detained Tuesday as partof an ongoing police investigation into the network. The indictmentrefers instead to several others already in detention for suspectedlinks to Ergenekon.

Police escort retired army commander Hursit Tolon after a medical check in Ankara, Turkey, 01 Jul 2008

A senior Turkish military commander, GeneralIlker Basbug, has called for calm in the aftermath of Tuesday'sdetentions, which include two retired generals, Hursit Tolon and SenerEruygur and a prominent journalist, Mustafa Balbay. General Basbugsaid Turkey is passing through difficult days, and he urged citizens toact responsibly and carefully.

Officials say Ergenekon issuspected of plotting disturbances and assassinations to undermine thegovernment and trigger an army takeover.

Turkish oppositionparties criticized the detentions, accusing the government of trying tointimidate its critics. Turkish Prime Minister Recep Tayyip Erdogandenied the police action was designed to silence government opponents.

Inanother development Tuesday, Turkey's chief prosecutor AbdurrahmanYalcinkaya appeared in court to argue his case for banning the rulingAK party.

He told the Constitutional Court the party is tryingto turn Turkey into an Islamic state and he called for about 70 AKparty members, including Mr. Erdogan and President Abdullah Gul, to bebarred from politics.

AK denies the charges and calls thepetition anti-democratic. The AK party's defense is expected topresent its oral arguments Thursday.

Some information for this report was provided by Reuters.