Both international and domestic train station stops at Sydney Airport were evacuated over a police operation.
NSW Police said on Saturday about 1pm both stations had been evacuated “as a precaution”.
“Services are suspended between Central and Turrella due to a police operation at Domestic Airport,” Sydney Trains tweeted at the time.
“Trains will be diverted via Sydenham. Bus companies are being contacted to provide a replacement service; there is no ETA for these buses to begin. Allow extra travel time.”
It's not clear exactly what the police operation was about.
Platforms re-opened about 2.30pm and trains were running again through the two stations, the ABC reported.
NSW Police tweeted a search had been carried out at the stations during the lockdown.
"The police operation at Sydney Airport Railway Stations has now concluded," the tweet read.
"A precautionary search was conducted, and no items were found."
Police urged people to keep monitoring the T8 Sydney Trains Twitter page to get up-to-date information about delays to services.
Yahoo News Australia understands no flights were affected by the operation.
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