A Uighur separatist group has taken credit for a deadly bus bombing in Shanghai in May and warned of new attacks in China during the Olympics, a group monitoring threats by extremists on the internet said.

In a video statement, Commander Seyfullah of the Turkestan Islamic Party claimed credit for several attacks, including the 5 May Shanghai bus bombing which killed three; another Shanghai attack; an attack on police in Wenzhou on 17 July using an explosive-laden tractor; a bombing of a Guangzhou plastic factory on 17 July; and bombings of three buses in Yunnan province on 21 July.

Three people were killed as a result of the explosion on the crowded bus in Shanghai on 5 May, police and witnesses said.

The incident occurred during the morning traffic rush hour in northwest Shanghai and also left 12 people injured.

At the time, authorities attributed the blast to flammable materials carried by a passenger.

'More to come'

But Seyfullah said the blast was the work of his group and warned of more explosions to come.

"Through this blessed jihad in Yunnan this time, the Turkestan Islamic Party warns China one more time," Seyfullah says in the video dated 23 July, according to a transcript from the Washington-based Intel Centre.

"Our aim is to target the most critical points related to the Olympics. We will try to attack Chinese central cities severely using the tactics that have never been employed," he continues.

According to global intelligence analysts Stratfor, the Turkestan Islamic Party is another name used by the Islamic Party of East Turkestan (ETIM), an ethnic Uighur and Muslim separatist group seeking to create an independent state out of China's westernmost, heavily Muslim Xinjiang province.

The United States, China and other countries have designated ETIM a terrorist group.

Beijing is wary of ethnic Uighur Muslims living in Xinjiang, who maintain an ethnic identity distinct from the Chinese and have struggled to re-establish the independent state of East Turkestan since their homeland became part of China in 1955.

Rights bodies say the Chinese government is cracking down on them under the pretext of fighting terrorism.

Taking aim at China, Olympics

On 27 June Seyfullah released a five-page statement, citing a long list of grievances against the Chinese government and calling for attacks on the Olympic Games and other targets in China.

The statement said the use of biological weapons would be permissible and that suicide bombers were ready and willing to carry out operations throughout the world.

"After receiving the order, asking Allah's continual help in this matter, the military commander has made the order to all brothers and sisters in every corner of the world, to move to the action phase," Seyfullah argued.

"These brothers and sisters have been waiting for the order and these brothers and sisters are volunteers who would commit suicide bombing when it is time for it."

The separatist leader went on to urge attacks on Chinese officials, declaring readiness to kill the top leaders, soldiers, police, prison wardens, and accomplices."

AFP