Madrid, July 25 - Italy's foreign ministry on Thursday could neither confirm nor deny whether Italians were on board a train that crashed overnight in northwestern Spain, killing 77 and injuring more 100. "We can't exclude anything, but there aren't any official confirmations regarding Italians on board the derailed train near Santiago de Compostela," said Claudio Taffuri, in charge of the foreign ministry's crisis unit. Spanish media had reported that a group of young Italians were aboard the train. Spain's government said the cause of the crash appeared to be the high speed at which the eight-car train was traveling while making a curve. Some reports said it was traveling 190 km/h at the time, more than twice the limit.