Hisar: At least four people were killed and nearly 20 others injured in Haryana's Hisar district when a tree fell on a mini-truck carrying pilgrims to a religious shrine in Rajasthan, police said on Tuesday. The accident took place near Kohli village on the Agroha-Adampur highway in Hisar. There were around 50 people in the mini-truck. The injured were taken to hospitals in Hisar and Adampur. Some of the injured were serious, police said. The victims were from the state's Jind district.