The Legislative Council secretariat has reminded lawmakers to disclose any investments they have in minibonds or similar products issued or guaranteed by Lehman Brothers ahead of a debate tomorrow about ways to help investors in the risky derivatives. The debate will include consideration of whether the government should seek compensation on investors' behalf if investigations prove banks or brokerages mis-sold the products. Investors face losing much or all of their investments following the bankruptcy of the US bank. Two legislators who have been helping investors seeking refunds from Lehman Brothers derivatives bought similar products. That raises the possibility their participation in the debate and the votes at the end of it could give rise to conflicts of interest. Civic Party leader Audrey Eu Yuet-mee has declared to Legco that she invested in Lehman Brothers products via a trustee; the Democratic Party's Kam Nai-wai said yesterday that he had invested HK$500,000 in a form of derivative called equity-linked notes issued by the United Bank of Switzerland and had declared an interest to Legco. According to Legco rules of procedure, legislators shall not speak on or move any motion or amendment relating to a matter in which they have a pecuniary interest without first declaring that interest. They may not vote on a matter in which they have a direct pecuniary interest unless the rest of the population, or a sector of the population, has similar interests or the vote is on government policy. Ms Eu said she had declared her interest on several occasions. She said the products she invested in were not sold by any of the 21 banks accused of mis-selling minibonds and similar products issued or guaranteed by Lehman Brothers. She said she did not file any complaints of mis-selling, and added: 'There is no pecuniary interest involved.' All lawmakers should be involved in debate about the minibonds since it involved issues in line with the public's interest, she said. Mr Kam also said legislators need not withdraw from discussion of the mis-selling of minibonds as long as they declared any interests. The secretariat said the involvement of Ms Eu and Mr Kam in a vote on Friday on whether to appoint a subcommittee to investigate the matter did not involve any pecuniary interests.