Thrill-seekers at Universal Studios Singapore (USS) were stuck on the popular Battlestar Galactica ride for about 20 minutes after the roller-coaster malfunctioned today at around 4.15pm.
Stomp contributor S who was at the theme park alerted the citizen journalism website to the incident.
She said in a telephone interview: "I saw some of the USS staff assisting people off the ride.
"They told me that they had waited for 15 to 20 minutes before that to see if the roller coaster would start running again.
"I am not sure what caused the malfunction.
"I don't think anyone was injured."
A spokesperson from Resorts World Sentosa (RWS), that manages USS, said in a statement to AsiaOne that "the Battlestar Galactica: Human vs. Cylon roller coaster experienced a technical error at about 4pm today".
"Standard operating procedures were followed to evacuate riders safely from the lower section of the ride.
"The safety of our guests is our top priority and a thorough routine safety check was completed before we resumed the ride at 5.08pm", added the statement.
This is not the first time that the world's tallest duelling roller-coaster, as dubbed by RWS, has come into trouble.
In Mar 2010, the ride was shut down a week after USS' opening due to a seat falling off the ride during a routine safety test. No one was injured then.
It re-opened in Feb 2011 but closed again in July 2013 due to an attraction review.
The ride opened one more time in May 2015 and has had no reported issues since then.