The National Transportation Safety Board (NTSB) said on Saturday it will investigate a crash of a Freightliner box truck and a bus that killed six in Louisville, New York. The crash, which occurred around 6:02 a.m. Saturday on State Highway 37 in the small city in St. Lawrence County near the Canadian border, also resulted in three serious and critical injuries to people who were then transported to a local hospital, New York State police said. The NTSB said it is launching a six-member team to investigate the crash.