Escaped NSW prisoner dangerous: police Joshua Duke. A prisoner who escaped from a correctional facility on the NSW south coast today is dangerous and should not be approached by members of the public, police say. Staff at South Coast Correctional Centre in South Nowra discovered Joshua Duke, 30, was missing shortly before 2pm. Police are tonight using sniffer dogs and a police helicopter to search for him. Mr Duke was refused bail and is due to face court at a later date for numerous offences including an alleged armed robbery. A police spokeswoman said Mr Duke was dangerous and warned members of the public not to approach him. "There's no indication he's armed," the spokeswoman said. She said police did not have any idea of where he was. He is described as being of Caucasian appearance, 175 centimetres tall,of medium build, with a shaved head. He was wearing green shorts, a green T-shirt and green shoes. Anyone who sees Mr Duke or knows where he is should phone triple-0.