In yet another step towards de-escalation of tension at the Assam-Mizoram border, Assam Police on Monday withdrew a case against Mizoram Rajya Sabha MP K Vanlalvena as a “goodwill gesture” at the directive of chief minister Himanta Biswa Sarma. However, criminal proceedings against "erring" Mizoram policemen and other miscreants involved in the incident of July 26 in which six Assam Police personnel were killed will continue. The move comes a day after Mizoram said it would not proceed against Sarma, who has been booked along with six state officials, on various charges.