BEIJING, Feb. 27 (Xinhua) -- Police in Xiantao City of central China's Hubei Province warned the Internet users the notorious "Panda burning joss stick" virus can still jeopardize the cyber space with various kinds of mutations after major suspects have been arrested.

    The police told Shanghai Morning Post newspaper that Li Jun, writer of the virus, has sold the virus to more than 120 people, but only six of them have been apprehended by the police. Police said other buyers could make new mutations through rewriting the virus.

    Computer experts warn that ill-willed computer master-hands can also figure out most of the source code of the virus and make mutations.

    The virus, which infects program files and flashes a picture of a panda holding three joss sticks, has been spreading through the Internet since December. It has infected millions of computers nationwide.

    Since its mutation may break out at any time, the virus has been listed as A-level virus in the forewarning report of one of China's leading anti-virus companies known as Jiangmin.

    Jiangmin's anti-virus software targeting the "Panda" can only kill the virus on the personal computer but can't root out the virus from the Internet, because the source code can't be deleted, according to Wang Hao, an anti-virus expert with Shanghai Computer Virus Prevention Service Center.

    The police said an anti-virus tool expected to extinguish the virus has been written by Li after he was caught. The tool will be posted on the website www.xt110.net for downloading soon after it withstands tests by computer experts.