TO controversial radio talkback host Albert Cheng King-hon it was just another storm in a teacup. But government broadcaster RTHK is demanding an apology and might take legal action over comments he made during his Commercial Radio programme that the news division was not objective in its reporting. Mr Cheng, on his Storm in a Teacup show, had criticised a report on a Democrat legislator's lambasting of the commercial sponsorship frenzy surrounding Lee Lai-shan. When RTHK executive producer Monica Wong Tak-yee then called in to defend the reputation of the broadcaster, Mr Cheng launched into a tirade. 'You are not impartial. Your station's principle is to speak for the Government,' he said. The broadcaster fired off an official statement demanding he swallow his words. 'RTHK has been following the professional spirit of being accurate, objective and impartial,' the statement said. 'We thought that Mr Cheng's accusation was unreasonable, unfair and unfriendly and was a malicious attack on our news section.' But the voluble DJ remains defiant. 'I will not apologise,' he told the Sunday Morning Post. 'If RTHK wants to pick a fight with me, that's fine.' The station has an agreement with the Government, which funds it, guaranteeing editorial freedom. Mr Cheng's attack highlights concerns that its official status means it may be used as a propaganda mouthpiece by China after the handover. RTHK began broadcasting advertisements publicising nominations for the Selection Committee yesterday after the Government agreed to a request for airtime from the Preparatory Committee.