The death of a woman, whose body was found in a Sydney school, is being treated as suspicious.
Emergency services responding to a report of a concern for welfare found the body about midnight on Thursday in St Andrew's Cathedral School in the city's CBD.
Police are yet to formally identify the woman but are treating the death as suspicious.
A post-mortem will be conducted to determine the cause of death.
Local detectives, with assistance from the homicide squad, are investigating.
Inquiries led police to set up a second crime scene in the Vaucluse area with police still to determine if the two crime scenes are linked.
The school is expected to be closed on THursday.
Police are due to address media later on Thursday morning.