MASON, OH (FOX19) - Two people were treated for smoke inhalation Monday afternoon at Kings Island after the park's Flight of Fear indoor roller coaster experienced an electrical malfunction and started smoking.
Firefighters were called at about 2:45 p.m. and found heavy smoke inside the building of Flight of Fear.
Authorities said the source of the smoke was found to be an electrical motor. No flames were reported.
The smoke stopped once power was shut off to the motor. The building was evacuated so crews could ventilate the indoor facility.
Kings Island said initial investigations indicate the smoke was caused by an overheated motor.
Approximately 18 people were exposed to the smoke, officials said. Two were treated at the scene but not transported to a hospital.
Several users posted photos of the scene on Twitter.
The scene began clearing by 3:45 p.m.
Kings Island guests were surprised.
"I thought that we were lucky that we weren't there when it happened because some people were in the building. It was kind of scary," said Julia Ehrhorn, who was visiting the park on Monday.
"We were in line towards the middle of the line to go on Flight of Fear. One of the workers came out and said that something was happening and we all needed to get out of line and leave the building."
Jesse Newman of Troy and his brother Joshua, along with their group, were on a nearby bench when they saw the unfamiliar sight of emergency crews weaving their way through the park. Not long before that, they rode Flight of Fear.
"It makes me a little shook up. I would ride it again. I think the administration of the park would take care of it and it will be all fixed," Joshua Newman said.
Here's a statement Kings Island spokesman Don Helbig sent to FOX19:
"Today, at approximately 2:40 p.m., the Flight of Fear roller coaster was shut down after smoke was detected inside the ride. Kings Island emergency personnel responded quickly and guests were safely evacuated from the ride and returned to the park. Initial investigations indicate the smoke was caused by an overheated motor. As always, the safety of our guests and associates remains our No. 1 one priority."