Assam CM Himanta Biswa Sarma says driver's possible medical emergency may have caused the Kaziranga crash that killed 26, and stresses stricter road safety. Guwahati: Assam Chief Minister Himanta Biswa Sarma on Saturday said that a possible medical emergency suffered by the driver could have been one of the reasons behind the horrific Kaziranga road accident in which 26 people were killed, while expressing concern over the increasing number of road mishaps.