A bus carrying dozens of vacationers to Tokyo Disneyland has crashed on a highway, killing seven passengers, AP reported.

Police say the other 38 passengers and the 43-year-old driver were injured, 13 of them seriously, in Sunday April 29 morning's accident on a highway in Gunma, north of Tokyo. The bus crashed into a roadside wall. Steel wall panels sliced its body in half.

Police are investigating the cause. They say all the passengers are believed to be Japanese nationals, mostly young adults.

Police were having difficulty identifying the bodies. They identified two of the seven dead - a man and a woman, both 50. The five other victims were women.

The passengers were mostly vacationers going to Tokyo Disneyland as Japan headed into this week's "Golden Week" holidays.