A wheelchair-bound man died Monday after falling from a sky-diving ride at an indoor amusement park in Tokyo's Daiba waterfront area, police said.

Junichi Tsubouchi, from Uchinada, Ishikawa Prefecture, fell about 5 meters from a ride called Viva! Skydiving at the Joypolis amusement park at around 1 p.m. The facility is operated by Sega Corp.

Tsubouchi, 30, had been on a visit to Tokyo since Sunday along with two care workers.

The police said they are questioning staff on suspicion of professional negligence resulting in death because they were aware that Tsubouchi was taking the ride without wearing a safety belt. He could not tighten the safety belt because he was too big, the staff were quoted as saying.

The six-seat ride plunges about 12 meters to just above ground level toward a projected image of the sky while wind gushes in from below.