The Oklahoma City Fire Department says no one is hurt. The department tweeted about its emergency response shortly before noon Thursday.
The cars are stuck atop a peak on the roller coaster track. It isn't clear how many passengers are stuck and how high off the ground.
Frontier City Parksaid in a statement to TV station KFOR that park personnel helped to remove some riders from the Silver Bullet coaster. Firefighters are assisting others.
This is the second time in less than a year that the ride has malfunctioned.
Report a typo to the ABC13 staff