At least 13 people were killed and 14 injured when a passenger van fell into ravine in Pakistan-administered Kashmir Sunday morning, media reported.The van with over 30 people on board was on its way to north Rawalpindi when it met with the accident in Bagh area of Kashmir, Xinhua reported citing ARY News.The injured people have been shifted to a nearby hospital where at least eight of them were said to be in critical condition.Cause of the accident is not known yet, but police believed that bad weather and negligence of driver might be the reason behind the accident.