Scotland's first minister says there are 'early reports of serious injuries' after a passenger train derailed in Aberdeenshire.
Emergency services have declared a major incident.
Pictures on social media show smoke billowing into the sky and dozens of ambulances and police cars in a nearby field.
British Transport Police say the derailment happened at 9.43am this morning on the line near the town of Stonehaven.
The derailment came amid stormy conditions in Scotland today, with significant disruption and flooding reported in parts of the country.
First minister Nicola Sturgeon has told the Scottish Parliament the derailment was "extremely serious" and involved a passenger train.
She said: "The emergency services are currently on site, and a major incident has been declared.
"I have just come off a call with Network Rail and emergency services, and although details are still emerging, I am afraid there are early reports of serious injuries".