JACKSON, N.J. - (AP) -- Riders on a roller coaster at Six Flags Great Adventure got an unexpected thrill when the attraction lost power and they had to walk down along the tracks.

The Nitro coaster at Six Flags Great Adventure in Jackson was briefly shut down after Friday afternoon's outage, which was caused by a computer issue.

The car stopped partway up the ride's 233-foot peak.

No one was hurt, and a spokeswoman has said that all riders were off the ride in 23 minutes. The coaster reopened less than an hour later after safety checks.

According to the park's website, Nitro hits speeds up to 80 mph and features a 540-degree helix spiral and a 215-foot drop.