The Big Baboon Escape!

Three baboons that escaped a Sydney hospital have been contained by police and medical experts.

Police were called to a car park near Royal Prince Alfred Hospital on Missenden Road and Lucas St in Camperdown about 5.30 pm today after the baboons escaped while being transported, an NSW Police spokeswoman told AAP.

"They're currently contained and police are working with experts to safely return them to their facility," the spokeswoman said. There is no immediate danger to the public but people are advised to avoid the area."There is a medical research facility within RPA hospital where it's believed testing is done on animals."

The hospital is yet to make a comment on the welfare of the baboons.