Nine people have been hospitalised after the stairs collapsed at a "House of Horrors" attraction in Ireland's Tayto Park.
Police were called to the accident around 8pm on Saturday night as the County Meath park held a Halloween-themed event.
It is understood the stairs gave way inside the attraction.
There were no details of the injuries sustained, but the park said those caught up in the accident were taken to hospital "as a precautionary measure".
In a statement, the park said: "Last night at approximately 8pm the lower portion of a permanent staircase leading to The House of Horrors gave way.
"The Tayto Park emergency plan was immediately put in place and the emergency services attended the scene.
"Nine people were transported to hospitals in the city as a precautionary measure to assess their injuries."
The Health and Safety Authority has launched an investigation.
"The management of Tayto Park will co-operate fully with the investigation as the safety of our guests is paramount," the statement added.
The park opened as normal at 10am on Sunday.
Tayto Park is themed on the famous Irish crisp brand Tayto, and is the only one of its kind in Ireland. It opened in 2010.
