This is the moment workmen caught the explosion of a fire within a building on one of Glasgow's biggest shopping streets. 

In the footage given to the Glasgow Times, a well-developed fire can be seen within the building behind Zara on Buchanan Street. 

As stunned workmen watch the blaze in action, an explosion forces them to take cover. 

You can watch the moment here which contains strong language. 

 

One of the workmen told our reporter: "I just heard a massive bang and then saw the fire, I couldn't believe it."

"I got such a fright it was like a big explosion. There was loads of smoke coming out the building as well. I think it was an electrical fire."

He added: "There was a massive bang and then a huge fire. I think it came from a plant room but that hasn't been confirmed. I hope everyone is safe.

"We were working in the building next door and got evacuated for safety. It all happened really suddenly. We don't know when we will get back to work."

Seven fire engines remain at the scene of the inferno which kicked off at around 9.40am this morning. 

Fire crews say there are no reported casualties but they will continue to extinguish the blaze. 

The blaze appears to be located in the building behind Zara. It is understood that there flats located in the building.

READ LIVE UPDATES: Live updates on Glasgow's Buchanan Street fire near Zara

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(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Firefighters on Buchanan Street. Picture by Colin Mearns.)

(Image: Buchanan Street fire)

(Image: Firefighters on Buchanan Street)

Buchanan Street is the city's biggest shopping street with football just behind London's Oxford Street. It is a pedestrianised area and is part of the famous style mile which links Argyle Street and Sauchiehall Street. 

A Scottish Fire and Rescue Service spokesperson said: "We were alerted at 9.40am on Thursday, 27 June to reports of a fire within a seven-storey building in Glasgow.

"Operations Control mobilised seven appliances to the city's Buchannan Street, where firefighters were met by a fire within the building's second floor.

"Crews currently remain on scene working to extinguish the fire.

"There are no reported casualties."