Mulugu: In a tragic incident, a bus driver suffered severe cardiac arrest and died while driving the vehicle carrying 40 passengers. The shocking incident took place in Veerabhadravaram village of Venkatapuram Mandal in Mulugu. According to the sources, the bus carrying Bhavani devotees from Kanipakam of Chittoor, Andhra Pradesh on the way to Yadadri after completing the darshan of Bhadrachalam. The bus driver suffered cardiac arrest and died and the bus rammed into the roadside fields. The incident triggered panic among the passengers and locals. The police registered a case and an investigation is underway.