At least six people were killed and 25 injured on Monday when a landslide derailed a local train carrying commuters and students near the city of Bolzano in northern Italy, emergency services said. "Six or seven people were killed but the death toll could get worse," said Florian Schroffenegger of the fire services department of Bolzano, in the Alto Adige region. He said five of those injured were in a serious condition following the peak-time accident, which took place at 9 a.m. local time (0700 GMT), according to a report of Reuters. Thomas Widmann, transport adviser to the Bolzano provincial government, told Sky Italia television that the landslide which derailed the two-carriage train appeared to have been caused by a burst irrigation pipe. Television images showed the train had slid down a slope and been stopped by a line of trees. Ansa news agency reported that the trees had saved the packed train from plunging into a river below. Seven corpses had been pulled from the wreckage, Ansa reported.