Turkey's government on Sunday dismissed nearly 1,400 military personnel, including a top aide to President Recep Tayyip Erdogan, in the latest round of a sweeping purge following a failed coup.

The announcement in the official gazette came as Erdogan sought to tighten his grip over the country by bringing the armed forces and spy agency under his control.

State-run news agency Anadolu said the soldiers were dismissed because of alleged links to the movement led by United States-based cleric Fethullah Gulen, whom Ankara accuses of masterminding coup. Gulen strongly denies the charges.

The latest expulsions followed the dishonourable discharges of 149 admirals and generals -- almost half the military's entire contingent -- along with 1,099 officers and 436 junior officers.