Kullu:A bus carrying 60 passengers fell into a gorge near the Bunter area of Kullu on Thursday. The rescue team has rushed to the spot and is carrying on with the rescue work. Till now, it is recorded that at least 40 persons have lost their lives According to a local daily, the 40 people who have reported to have been killed have drowned in the Parvati River. It is still not clear that what caused the accident of the bus. It is feared that there was a brake failure which led the bus into the gorge. Himachal Pradesh recently witnessed heavy rains that washed away several roads in Kullu following the flash floods. The heavy downpour also has triggered several landslides in the region. The improper road and travelling condition might also be said to be one of the prime causes of the deadly accident.