A fault with the signalling system between Carrbridge and Inverness means all lines are closed. Trains running between these stations may be delayed or revised.
There is also a speed restriction between Perth and Kingussie due to heavy rain flooding the railway.
Disruption is expected until 21:00.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner
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If you would like to follow this incident on Twitter, please use #Perth
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.
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