The Mizoram Police has booked Assam chief minister Himanta Biswa Sarma on charges of attempt to murder and criminal conspiracy over the recent clashes at the interstate border on July 26. ALL THAT HAPPENED TODAY 'They fired first': Mizoram CM Zoramthanga counters Assam CM's claim Countering Assam chief minister Himanta Biswa Sarma's claim on border clash, Mizoram chief minister Zoramthanga …