A MAJOR New South Wales hospital has been evacuated and three others were the subject of a police operation this afternoon.

They were reports police were called to the Sydney hospitals, including RPA, Prince of Wales, Longueville and Royal North Shore, after bomb threats were made.

Medical staff and patients from the Prince of Wales Hospital were evacuated briefly but have since returned to work.

A police spokeswoman told news.com.au there are “police operations going on” but wouldn’t provide details.

In a brief statement this afternoon police confirmed the “threats” were being investigated.

“Detectives from Central Metropolitan Region are liaising with officers from the Department of Health to identify those responsible for the threats.”

+ Anyone with any information should call Crime Stoppers on 1800 333 000