Greenpeace activists protested outside police headquarters yesterday following the arrest of four members after hanging a banner on a government building without permission. The yellow 'wanted' banner emblazoned with Chief Executive Donald Tsang Yam-kuen's face was draped across seven storeys of the Central Government Offices, West Wing, on Tuesday. Police were forced to shut down part of Queen's Road Central to accommodate the protest. The banner accused Mr Tsang of being a 'Climate Fugitive' after he failed to respond to a request from the group to confirm his attendance at the Copenhagen Climate Change Conference in December. The group also alleges that the government has failed to launch any policy to combat climate change. Greenpeace campaigner Prentice Koo said: 'The Chief Executive ... has refused from the very beginning to set a reduction target on Hong Kong's greenhouse gas emissions.' A government spokesperson said a delegation had not yet been chosen to attend the conference, but the Hong Kong representation would be part of the central government's delegation. Meanwhile, Mr Koo said the four activists were arrested for being a public nuisance, but insisted that Mr Tsang was the real public nuisance. The environmental group is pushing the chief executive to deliver a climate-change policy that cuts emissions by up to 40 per cent.