Emergency evacuation at Sydney Airport as train passengers are rushed out of the station 

Passengers have been forced to evacuate from Sydney domestic and international train stations amid an ongoing police operation.

NSW Police are yet to reveal details of the incident, but reports suggest the areas have been locked down since about 1pm.

‘A police operation is under way at the International and Domestic railway stations at Sydney Airport,’ NSW Police media officials wrote in a statement.

‘The platforms have been evacuated as a precaution. More info will be available as it comes to hand.’

Buses are operating instead of trains for several routes and several destinations are no longer in service at all while the operation is underway.

‘On the T8 Airport and South Line trains are travelling via Sydenham and not stopping at Green Square, Mascot, Domestic Airport, International Airport or Wolli Creek due to a police operation at Domestic Airport,’ Transport NSW said in a statement.

‘Passengers wishing to travel to these stations are advised to delay their trip until replacement buses are operating.

‘Passengers already travelling should allow plenty of extra travel time, listen to station announcements and check information displays for updates.’

It is not clear when services will be up and running again.

The disruption within the train network has not impacted flights, but a spokeswoman from Sydney Airport has urged travellers to monitor the delays and seek alternate transport to the airport.