Australian police have released an X-ray image showing the skull¹ of a murdered Chinese immigrant shot repeatedly with a nail gun.

澳大利亚警方放出一张头骨X光照片，显示中国移民被射钉枪发射多次致死。

A post-mortem examination revealed that Mr Liu was shot 34 times

Police are appealing for help to solve the murder of Chen Liu, 27, whose body was found by two children last year in marshland（沼泽地） in south Sydney.

Detectives said the weapon was a gas nail gun used in construction, firing nails up to 85mm (3.3in) long.

Mr Chen arrived in Melbourne（墨尔本） in 2000 on a student visa, and moved to Sydney.

A post-mortem examination revealed that Mr Liu was shot 34 times in the head and neck with a high-powered nail gun, police said.

The weapon has not yet been recovered. Police have appealed for information from anyone who may have been in the area at the time of Mr Chen's death.

Brutal²（野蛮的） murder

"In 36 years, I've never seen a murder of this nature," Homicide Squad³ Superintendent⁴ Geoff Beresford told reporters.

"It's a particularly brutal and vicious（恶毒的，恶意的） murder and hence（今后，从此） the reason we are seeking information from the public," he said.

Mr Chen's badly decomposed⁵（已分解的，腐烂的） body was found on 1 November 2008, wrapped in plastic, wire and an electrical cord（绳索，束缚）.

"We believe the perpetrators（犯人，作恶之人） had every intention of the body not being discovered," Supt Beresford said.

"Certainly there were efforts made to perhaps weigh it down if you like, and it was the force of nature, the tides, whereby the body has been discovered on the river bank."