A former top-level government official and a Hong Kong property billionaire involved in one of the city's biggest corruption scandals were at the anti-graft agency's offices briefly on Tuesday (April 10) morning.
Rafael Hui, the former No. 2 official in the Hong Kong government, made a brief stop at the Independent Commission Against Corruption (ICAC).
Soon after Hui left, Sun Hung Kai co-chairman, Thomas Kwok, stopped by at the ICAC.
Thomas Kwok, his brother Raymond, and Rafael Hui were arrested on March 29 on suspicion of corruption, though no charges have been filed and they are free on bail.
Local media say Hui and Thomas Kwok went to the ICAC on Tuesday to extend their bail, adding that Raymond Kwok had already visited the anti-corruption headquarters.
The brothers are worth $18.3 billion, according to Forbes magazine.
The ICAC can call the Kwoks in for questioning as many times as it wishes during the course of its investigation.
The agency then hands the information it has gathered over to Hong Kong's department of justice, which decides if it has enough evidence to prosecute.
Such investigations can take months to assemble.
Shares of Sun Hung Kai Properties, Asia's top property developer, have lost roughly $5 billion or around 15 percent of their market value since the arrests.
The investigation is the biggest case launched by the ICAC since it was set up in 1974 to root out graft.
