A Sri Lanka Railway official told Xinhua that an investigation by the Railway and Wildlife Departments was underway and added that the accident took place in a spot which was not frequented by wild animals. The elephants were walking towards a newly constructed railway line in Chettikulum, in the Vavuniya district when they were hit by the Colombo bound Thaleimannar Express train.No passengers were injured in the accident. “The Wildlife Department together with the Sri Lanka Railways have been trying to identify paths where wild animals usually roam around. Along these routes trains usually reduce their speed and are very cautious. Wednesday’s accident took place in an area where there have been no wild life movements,” the official said.He added that the four elephants had been hurt when they suddenly moved on to the tracks while the train was crossing. One baby elephant had been dragged meters away. (Colombo Gazette) Four elephants were killed when they were hit by a passenger train in northern Sri Lanka on Wednesday, Police said.The accident is termed as one of Sri Lanka’s worst involving wild animals, according to the Xinhua news agency.