The High Court declared illegal as illegal a law providing indemnity to those involved in Operation Clean Heart.The bench of Justice Moyeenul Islam Chowdhury and Justice Ashraful Kamal has announced this verdict on Sunday.The High Court says the law providing indemnity to security force personnel as violating the provisions of the Constitution.The BNP-led coalition government claimed the operation was conducted to check terrorism, while the opposition Awami League alleged it was to annihilate the opposition leaders and supporters.According to New York-based Human Rights Watch, 60 people were killed during the operation. The government admitted that 12 of the detained people died of `heart attack`.Earlier on Feb 24, 2003, the BNP-Jamaat government passed a law, providing indemnity to the military officials who took part in the special operation.