BREAKING: Police clearing Sydney Opera House and surrounding area, ferries cancelled...
A police operation is under way at the Opera House.
Police confirmed the operation on Thursday afternoon but no further information is available.
Fairfax Media understands police are carrying out a search of the area and also around Manly wharf.
Police are reportedly clearing people from the area and some ferry services have been cancelled.
Opera House workers have reportedly been evacuated from the building.
The 1.20pm ferry from Manly to Circular Quay was cancelled due to the operation, said a Department of Transport spokeswoman.
Check back for updates.