A former top Hong Kong civil servant was yesterday found guilty of accepting HK$8.5 million (US$1.1 million) in bribes from executives of property developer Sun Hung Kai Properties Ltd, in the city's highest profile corruption case.

The jury of six women and three men reached their verdicts after deliberating for five days following a trial that exposed the cozy relationship between the city's powerful developers and the local government.

Rafael Hui, 66, who headed Hong Kong's civil service from 2005 to 2007, was found guilty of three counts of misconduct in public office and two counts of conspiracy to commit misconduct. He had faced eight charges related to bribery and misconduct in public office, all of which he denied.

Raymond Kwok, 62, co-chairman of Sun Hung Kai Properties, the city's largest developer, was cleared of all charges. But his brother and fellow co-chairman, billionaire Thomas Kwok, 63, was found guilty of one count of conspiracy to commit misconduct in public office. He had pleaded not guilty to that and two other charges.

Raymond said he was happy he had been proved innocent although he was sad for his brother. "We'll continue to support Kwok Ping-kwong and his family," he said, referring to his brother.

The usually-jovial Hui, friends with the Kwoks since childhood through Macau family connections, sat expressionless, staring at the judge as the verdicts were announced.

The judge is expected to sentence the defendants, who face years in prison, on Monday.

The guilty verdicts send a message that Hong Kong's powerful political and business elite are not untouchable in a city where many believe they have enjoyed unfair privileges. Hui's conviction by Hong Kong's Independent Commission Against Corruption had been widely expected given the strength of the evidence against him.

Sun Hung Kai executive Thomas Chan and businessman Francis Kwan were both found guilty of two charges of conspiracy to commit misconduct in public office and conspiracy to offer an advantage to a public servant.

The case, involving millions of dollars in payments to former chief secretary Hui, threatens to tarnish the reputation of Hong Kong's vaunted civil service.

Hui had been accused of accepting millions of dollars in payments between 2005 and 2007, including HK$8.5 million in the months leading up to his appointment as chief secretary. The corruption trial highlighted lavish spending by Hui, a racehorse owner and opera fanatic who enjoyed an extravagant lifestyle. He admitted to spending HK$200,000 on records in a single day in 2007 and travelled internationally to indulge his passions.

Prosecutors accused him of spending "vast sums" on costly organic bran and carrots for his thoroughbred horse.

Hui, who has been married since 1974, also said he had lavished millions on a young Shanghai woman after they started a relationship in 2008.

The tales tarnished a public service career in which he rose to become the deputy to Hong Kong's outgoing chief executive, Donald Tsang.

The property tycoons had spent much of the more than 100-day trial defending themselves against charges of having given Hui millions of dollars to be their "eyes and ears" in government.

Sun Hung Kai developed Hong Kong's two tallest buildings, the International Finance Centre and the International Commerce Centre.

The arrests sent a shock through the small, close-knit group of tycoons who control much of the city's business and hold substantial political influence.