THE man at the centre of the sacking of former ICAC deputy operations director Alex Tsui Ka-kit claimed yesterday he was illegally arrested by the commission last week. Henfrey Tin said he was taking legal advice about what he could do to seek compensation from the Independent Commission Against Corruption (ICAC) for his arrest, detention and the damage to his ''spiritual and financial'' well-being. He claimed he was the victim of ''a wicked organisation which persecutes honest citizens''. He continued: ''It is absolute lawlessness. The Government must be made liable for this outrageous behaviour.'' Mr Tin added he may have lost more than $10 million in international business deals due to bad publicity. The Post has revealed that Mr Tin sits alongside Mr Tsui on the Hong Kong Boxing Association's executive committee. Mr Tin was arrested last week along with association president Hung Wing-wah and 11 other people in connection with a cigarette smuggling racket. They were held overnight but have been released while inquiries continue. Mr Hung did not join Mr Tin in yesterday's public statement. His lawyer, Paul Kwong Wai-chuen, said Mr Hung was still under investigation. The ICAC investigation into the smuggling racket followed the internal inquiry which led to Mr Tsui's dismissal last November. The Post can now reveal that it was Mr Tsui's meeting with Mr Tin in Macau on boxing business that led to Commissioner Bertrand de Speville's sacking of Mr Tsui. The meeting came just hours after Mr Tin had been interviewed by Mr Tsui's underlings. Mr Tsui never declared his meeting - a clear breach of standing orders - and was sacked. He said yesterday he had no idea of the interview when he met Mr Tin, whom he had known for 20 years. Mr Tsui yesterday dismissed the matter as a ''minor reason'' used to sack him for ''darker motives''. He said those motives would become clear next month at a Legislative Council hearing involving himself and Mr de Speville, who has refused to publicly discuss the sacking. Mr Tin, however, confirmed he was interviewed by ICAC officers on June 21, last year, about a $500,000 loan by cheque to a friend, who he would not name. ''It was very brief and I helped them all I could about the cheque. I did not know what the investigation was all about,'' he said. After his interview Mr Tin said he travelled to Macau with Mr Tsui and other association officials to arrange stand-in kick-boxers for a Chinese team which had failed to appear for an upcoming tournament in Hong Kong. Meanwhile, Mr Tin said his arrest last Monday was ''totally without foundation''. Mr Tsui was present during Mr Tin's public announcement entitled ''ICAC Abuse of Power'' but stressed he was only attending as an ''observer''. Mr Tsui said he did not think Mr Tin's claims would affect his performance in the Legco hearing. But he did not know if the legislators, after hearing the allegations, would be influenced. ''It is difficult for me to comment on the case,'' Mr Tsui said. An ICAC spokesman said investigations were continuing and it would be several weeks before evidence was placed before the Attorney-General's Chambers. ''The inquiry involves many suspects and the examination of a substantial amount of documentation,'' the spokesman said. ''The accusations allegedly levelled at the ICAC . . . today will no doubt be aired in court in due course, and it would be inappropriate to comment on these matters at this stage.''