"The case was just an ordinary clash between street vendors and local public security people, but was used by a handful of people who wanted to cause trouble, " Zengcheng Mayor Ye Niuping was quoted by the China Daily newspaper as saying.

BBC: China migrant workers clash with police for third night

Andrew Mitchell, the Tory chief whip under a cloud after his clash with police in Downing Street, will stay away - even though the conference is just up the road from his constituency.

BBC: UK Politics

Later, Downing Street sought to play down the Commons clash, saying that the Prime Minister had known of the impending resignation - but he believed that confirming this to the chamber would leave the party open to accusations of control freakery.

BBC: Blair under fire in devolution debacle