A train has derailed in the Scottish Highlands during an early morning test run.
The service was not carrying any passengers and nobody was injured when it got into difficulty near Dalwhinnie at around 3.15am on Saturday, April 10.
Emergency services and recovery crews remain at the scene but it is not currently known how long it will take for the line to reopen.
Services have been disrupted while works to recover the stricken train remain ongoing.
Trains travelling north are only able to go as far as Pitlochry and will restart at Aviemore.
Southbound trains are currently stopping at Aviemore and picking up again at Pitlochry.
ScotRail confirmed there had been an early morning incident and that replacement bus services were now in place.
A spokesperson said: “Services between Perth and Inverness are currently disrupted, there will be replacement bus services for those making essential journeys.
“Customers should check our website, app and social media channels for the latest arrangements before they travel.”
A probe into the circumstances of the derailment by accident investigators is also set to begin.
In a statement, the Rail Accident Investigation Branch said: “RAIB is deploying inspectors to gather evidence following the derailment of a test train at Dalwhinnie on the Highland Line in Scotland.
“The train consisted of a short-form HST that was travelling south when the last two vehicles derailed in proximity to points.”
A Network Rail spokesperson added: “At around 0315 this morning (Saturday 10 April) a train derailed near Dalwhinnie station.
"The train was not in passenger service and there were no injuries. Engineers are on site to get services back up as soon as possible.
"We apologise to customers for the disruption to their journeys."
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