China's new counter-terrorism law has made it legal for the People's Liberation Army (PLA) to participate in counterterror missions overseas.

The PLA and the country's armed police forces may carry out such operations with the approval from the Central Military Commission, says the law adopted by top legislature on Sunday.

Public security and national security authorities may also send personnel overseas for counter-terrorism missions, with the approval from the State Council and agreements from concerned countries.

The law also stipulates that related departments, authorized by the State Council, may collaborate with overseas governments and international organizations in holding policy dialogues, communicating on intelligence information, enforcing the law and regulating international capitals.

The new law comes at a delicate time for China and for the world at large - terror attacks in Paris, the bombing of a Russian passenger jet over Egypt, and the brutal killings of hostages committed by the notorious Islamic State (IS) extremist group are alerting the world about an ever-growing threat of terrorism.

It will provide legal support to the country's counter-terrorism activities as well as collaboration with the international society, said An Weixing, an official with the public security ministry, at Sunday's press conference.