Riders stuck upside-down on roller coaster for two hours

May 2 (UPI) -- Riders on a Jurassic Park-themed roller coaster in Japan were stuck upside-down for two hours when the ride stalled, the park confirmed.

Universal Studios Japan said the Flying Dinosaur roller coaster had 64 passengers on board when it stalled at about 4:45 p.m. Tuesday.

The riders, some in the upside-down position 65-100 feet off the ground, were stuck on the ride for up to two hours. No injuries were reported.

The park said the incident was the result of a safety mechanism being triggered by an abnormality in the system. The ride resumed normal operations shortly after 7 p.m.