Attacks along the Mekong River after shipping resumed on Dec 10 are occasional and isolated cases, said a senior officer from Southwest China's Yunnan provincial public security department.

Shipping was suspended after 13 Chinese sailors were killed along the river in October.

"We are seeking a variety of modes of cooperation, such as joint patrols, armed escorts, intelligence gathering and sharing with the other three countries, Laos, Myanmar and Thailand, to boost the safeguarding of shipping on the river," said Meng Sutie, director of the Yunnan provincial public security department.