Four men were injured when they fell from a Marlborough Sounds hotel deck whose railing collapsed.
"We were called at around 6.50pm last night to reports that a balcony had collapsed at the Portage Resort Hotel," a police spokeswoman said.
"The fall was described as being around four metres."
The St John ambulance service said three suffered moderate injuries and one received minor injuries.
The men are aged between 59 and 89.