50 passengers were stuck on a ride at SeaWorld for over an hour

Passengers were stuck on the Sky Tower ride at SeaWorld Orlando for over an hour Monday before park personnel were able to return the ride to the ground.

The ride - which brings passengers 400 feet into the air for a view of the park - malfunctioned, stranding the passengers about halfway up the tower, CNN reported via WESH 2.

Some of the 50 people on the ride had called 911 to report the malfunction, according to Fox 35 in Orlando.

While the riders were still stuck, the park issued a statement indicating that staff were in "constant communication" with the guests and that all passengers were safe. The park worked with Orange County Fire Rescue to retrieve the passengers.

It is currently unclear what caused the ride's malfunction.

The Sky Tower ride during its malfunction:

Park personnel work to retrieve passengers from the Sky Tower:

Passengers leave the Sky Tower after being stuck on the ride for over an hour:

We're reached out to SeaWorld Orlando for comment and will update this post if we hear back.