New Delhi, Feb 16: Stating that it was probing afresh into the 1984 anti-Sikh riots, the Nanawati Commission today brushed aside senior Congress leader Sajjan Kumar's plea that he should not be called upon to answer charges for which he had already been acquitted by the trial court. Justice G T Nanawati, however, said that Kumar was at liberty to place all such judgements before the Commission while submitting his reply to the charges against him. The Commission assured his counsel that it would take into account all such documents before coming up with a report. However, it was free to form its own opinion with regard to reliability of any witness, the Commission said. ''Even if a witness was disbelieved by the courts during criminal proceedings, I might believe him,'' Justice Nanawati said, when it was brought to his notice that trial courts had acquitted Kumar in all three cases in connection with the riots. The trial court had acquitted Kumar in the last case in connection with riots in December 2002. The CBI, which had investigated the case, had charged him with leading a mob which killed and looted Sikhs in the capital. Further during the hearing today, the issue of being subjected to a sort of re-trial was also raised by several policemen who have also been served notices by the Commission for replying to charges against them. On their contention that the same witnesses had deposed before the courts which acquitted them, Justice Nanawati said a criminal trial was no bar to an inquiry by the Commission. ''The very fact that law and order was broken shows that policemen had failed to perform their duty,'' Justice Nanawati said. Meanwhile, senior Congress leader Jagdish Tytler sought a time of two more weeks to reply to depositions against him before the Commission probing the anti-Sikh riots which broke out after the assassination of then prime minister Indira Gandhi on October 31, 1984, killing hundreds of Sikhs and injuring thousands. The Commission fixed March 08 as the next day of hearing on which cross-examination of former Indian Express scribe Monish Sanjay Suri, one Mukhtiar Singh and one Ajit Singh, who earlier deposed before the Commission, is likely to take place. Bureau Report