St John, fire and police were in attendance and Bryce St between Anglesea St and Victoria St was blocked.
Police confirmed earlier that one of the two women on the Centre Place roof had come down while another remained. A police negotiator was then on the roof talking with the woman.
The Fire Service was at the scene assisting police, northern communications centre shift manager Colin Underdown said.
At that stage there were "a couple of young females on the roof", he said, adding that firefighters were there to help bring the girls down safely, he said.
More to come