UPDATE 9:34 p.m.: UPPER MARLBORO, Md. (TheBlaze/AP) — The 24 people stranded on a roller coaster have been rescued from near the top of the ride at Six Flags America in Maryland.

It took about five hours Sunday to rescue 17 adults and seven children from The Joker’s Jinx roller coaster, Prince George’s County Fire officials said.

A few of the riders had cramps, back pain and dehydration, but there were no major injuries, Assistant Fire Chief Paul Gomez said.

A Six Flags America statement noted it’s not yet clear what caused the ride to stop but that it has a computerized safety system that “performed as it is designed to.”

Original story below

UPPER MARLBORO, Md. (TheBlaze/AP) — A roller coaster carrying 24 people has become stuck near the top of the ride and fire officials are trying to rescue them at Six Flags America in Maryland, authorities said.

Prince George’s County Fire officials were called to The Joker’s Jinx roller coaster at the park just before 2:30 p.m. Sunday. No injuries have been reported.

The passengers are sitting upright near the top of the ride, Assistant Fire Chief Paul Gomez said, adding that it will likely take a few hours to get them down.

It’s not clear what caused the ride to get stuck. Telephone and email messages left for a Six Flags spokeswoman were not immediately returned.

Six Flags’ website indicates the ride reaches a speed of 60 miles per hour and goes upside down four times.

Featured image: Twitter/@AppelDylan