The SIT set up by the Centre for re-investigation of the 1984 Sikh riots cases examined more than one thousand witnesses in different states. Minister of state for home Hansraj Ahir said this in a written reply in the Rajya Sabha yesterday. <br/><br/>Mr Ahir said, the Special Investigation Team has scrutinised records of 293 cases and<br/>after scrutiny, a total 60 cases were re-opened for further investigation. The Minister said there was no delay on the part of the SIT in completing the investigation. Mr Ahir said, the progress of the work of the SIT is being monitored by the Home Ministry on regular basis.