The Chinese military says the people most likely to attack the Olympic Games are Muslim separatists.
Speaking from the headquarters of the 6th Armoured Division, Colonel Tian Yixiang, says a terrorist attack is the most serious threat to the Olympics.
The Colonel, who also works in the Olympic Security Command Centre, said violent separatists from the far western province of Xinjiang posed the greatest threat.
He referred specifically to the east Turkestan terrorist organisation.
He says another threat comes from Tibetan separatists, and another from Falun Gong.
But Colonel Tian said China was fully capable of providing a safe Olympic Games.
With thanks to ABC News