Man attacks Shanghai police station killing five

SHANGHAI (Reuters) - A man went on a rampage in a police station in Shanghai on Tuesday, stabbing five people to death and wounding another five, local media reported.

The man charged into Shanghai's Zhabei district police station, stabbed nine police officers and a security guard before being restrained, the Oriental Morning Post said on its website (www.dfdaily.com), without saying what his motive was.

"Five people have already died, among them four police officers and a security guard. All-out efforts are being made to save the five injured," the report said, citing Shanghai television.

Media reports later identified the man as a 28-year-old unemployed Beijing resident who had been investigated by the police for bicycle theft last year.

The man, surnamed Yang, had been "dissatisfied" with the police and "committed the violent act out of vengeance", a report posted on news portal Caijing (www.caijing.com.cn) said, citing the Shanghai Public Security Bureau.

China, which is preparing for an influx of foreign visitors for the Beijing Olympics starting August 8, has been at pains to boost security.

(Reporting by Ian Ransom; Editing by Benjamin Kang Lim and Ben Tan)