A 42-year-old man was injured after he was hit by a metal part that broke off a roller coaster at Nasu Highland Park in Tochigi Prefecture on Saturday.
According to police, the accident occurred at around 3 p.m. Sankei reported that the man, who was visiting the amusement park from Saitama Prefecture, was walking beneath the roller coaster when he was hit on the head by a metal object that fell from the coaster.
The man was taken to hospital and received three stitches for a gash in his head.
Police said the object that fell on him was part of a chain about 20 cms long and 5 cms wide. It fell about 14 meters before hitting the man.
The roller coaster remained out of operation on Sunday, the park said.
Police are questioning park personnel to find out when maintenance was last carried out on the roller coaster.© Japan Today