A fire at a vape shop has forced the closure of Scotland's busiest railway station "until further notice", Network Rail says.
Dozens of trains were cancelled on Sunday after a four-storey building in Union Street, close to Glasgow Central Station, caught fire.
The building has partially collapsed, and the station will not reopen this morning as firefighters continue to tackle the blaze - more than five hours after it began.
A spokesperson said: "Glasgow Central Station has been closed until further notice, and will not reopen on Monday morning, following a fire at a vape shop on Union Street.
"Emergency services, including Police Scotland and the Scottish Fire and Rescue Service, are on site and managing the incident.
"As a precaution, all services through Glasgow Central have been suspended, and passengers are advised to seek alternative travel arrangements.
"We will provide further updates as soon as more information becomes available."
First Minister John Swinney said in a post on X: "I am deeply concerned about the fire near Glasgow Central Station tonight, and very grateful to all of the emergency services who are responding.
"Please continue to follow travel guidance, avoid the area and stay safe."
Paul Sweeney, Labour MSP for Glasgow, said the building had partially collapsed. In a post on X, he said the building dates back to 1851.
"Sadly the building has now partially collapsed," said Mr Sweeney. "I hope the fire can be contained. The corner of the Forsyth Building, as well as the Caledonian Chambers and Central Hotel seem unaffected.
"It's a massive blow to Union Street with the restoration of the Egyptian Halls in prospect."
A Scottish Fire and Rescue Service spokesperson said: "More than 60 firefighters are currently working to tackle a large building fire on Union Street, Glasgow.
"We were alerted at 3.46pm to reports of a building fire on Union Street, Glasgow.
"At its height, nine fire appliances and specialist resources were mobilised to the area, where firefighters are currently working to extinguish a fire affecting the ground floor of a four-storey building.
"There are no reported casualties, and crews remain at the scene."
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