SACKED senior Independent Commission Against Corruption (ICAC) officer Alex Tsui Ka-kit has given his full support to a former colleague tipped to replace him as deputy director of the powerful operations wing. Yesterday Mr Tsui told the Sunday Morning Post Tony Kwok Man-wai was a good choice to take over the job from which he was sacked on Tuesday by ICAC commissioner Bertrand de Speville. ''Mr Kwok is a very competent man. [He was] a very close colleague of mine,'' he said. ''I have a high regard for him, and he will do a good job if he is given a free rein.'' Mr Kwok, 42, has been acting as deputy director of operations since Mr Tsui's dismissal, and it is understood he is next in line to be appointed to the job, which would put him in a strong position to be made the first local commissioner before 1997. According to a statement by Mr de Speville last week, an officer would be appointed to the post on ''promotional merit''. Mr Tsui would not discuss his dismissal after he was called back from Beijing last Sunday, other than to say he had taken legal advice with a view to suing the ICAC. ''I have not made my mind up yet,'' Mr Tsui said. ''I don't want to say much on the individuals and the facts. The next thing [the ICAC] might do is prosecute me under Section 30 [of the ICAC Ordinance] for disclosure if I discuss further details of this. ''I have to be very careful. ''It's an uphill battle, but it is a worthwhile battle and I'm not going to give up. ''I have all the will and determination to pursue this.'' Mr Tsui said at one stage last week he considered approaching Professor Felice Lieh-mak, the chairman of the ICAC's advisory committee, to give his side of the story, but later dismissed the idea after reading her comments in support of Mr de Speville. After his dismissal, newspaper reports linked his sacking to a secret police report on his private life, but Mr Tsui dismissed these as ''rubbish''. Mr Tsui is honorary chairman of the Hong Kong Boxing Association, which the police and ICAC have linked with a number of suspected senior Sun Yee On triad members. The sacked ICAC officer admitted there were ''problematic individuals in the sport'', and called on the Government to give the association more powers to control membership, clubs and competitions. ''They cause problems but we are powerless,'' Mr Tsui said. ''[The association] has no authority.'' He said the association had been trying ''very hard'' to clean up the image of the sport - which has up to 3,000 participants in 13 clubs - with the aim of getting all clubs properly registered. When asked if Mr Tsui was still under suspicion, one senior ICAC officer said: ''There is no continued internal investigation, but there is an ICAC inquiry into the boxing association and apparent triad links.''