China seized 91,000 criminal suspects and confiscated 28.8 tonnes of drugs in 2009 as the country's war on drugs intensified.

Chinese police destroyed 391 drug factories and warehouses, up 60.2 percent year on year, according to a statement posted on the website of the Ministry of Public Security Monday.

Police and other government departments - including frontier defense, railways, transportation, civil aviation, forestry and post - strengthened coordination, the statement said.

Police seized 1,559 drug traffickers of foreign nationality in 2009 while police and government administrative departments closed 264 entertainment venues where drug-related crimes were discovered.

Figures from the National Narcotics Control Commission (CNNCC) show China had more than 1.335 million registered drug users by the end of 2009, up 18.6 percent from the previous year, with males making up 84.6 percent of the total.

Some 173,000 drug addicts were forced to receive treatment in 2009 while 60,000 former addicts had stayed off drugs for more than three years.