Beijing: Troops have been mobilised to ensure a safe Beijing Olympics, Chinese President Hu Jintao said.

"Security must take priority," Hu told officials, according to the People's Armed Police news on Tuesday.

The paper also released a "political mobilisation order" to the People's Armed Police troops, telling them to be on alert.

The official warnings come in the wake of anti-Chinese riots and protests in Tibet and nearby provinces to highlight complaints about China's policies on human rights.