Commuters across the Sydney train network were experiencing major delays during peak hour on Monday evening after a suspected suicide near Summer Hill.
Sydney's Transport Management Centre warned of delays on lines leaving the city and advised passengers to allow extra travel time.
The T1 North Shore, Northern & Western Line, T2 Airport, Inner West & South Line, T3 Bankstown Line, Central Coast & Newcastle Line and Blue Mountains Line are all affected.
Passengers have reported on Twitter a train travelling between Central and Strathfield has reversed back towards the city due to the fatality.
Emergency Services are attending the scene at Summer Hill Railway station.
NSW Trains Link initially reported that a person had been injured by a train at Summer Hill.
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