At Six Flags America in Maryland, Prince George’s County crews rescued 24 people from the Joker's Jinx after it became stuck near the top of the ride.
Rescue crews were called to the ride around 2:30 p.m. ET Sunday, according to the Associated Press. It took more than four hours to rescue all of the passengers.
Passengers were helped into a "rescue bucket" and lifted into the air by a 105-foot tower ladder before being placed on the ground, according to NBC News.
A spokesman for Six Flags America said in a statement that it has not been determined what caused the ride to stop but that it has a computerized safety system that "performed as it is designed to."
The Joker's Jinx is designed to go 60 mph and flips upside down four times. The ride was added to the park in 1999.
After more than four hours, all 24 passengers were rescued and evaluated by EMS before being released.
Sunday's incident comes just a month after a roller coaster derailed at Six Flags Magic Mountain in California, injuring at least four passengers.
Michelle Broder Van Dyke is a reporter and night editor for BuzzFeed News and is based in Hawaii.
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