Roberto Capiel, a health official from the town of Dolores, near the crash scene, told one television channel some of the injured were in critical condition.
Television pictures showed the train partially derailed and the bus virtually destroyed. The accident took place about 130 miles (205 km) south of the capital Buenos Aires.
It was not immediately clear what caused the crash.
Last Mod: 09 Mart 2008, 14:29