Police have raced to the scene of an 'ongoing incident' in Glasgow's Sauchiehall Street.
At least three armed response vehicles were pictured on the busy thoroughfare at around 7.30pm on Friday.

Shocked eyewitnesses watched as the dramatic incident unfolded near a packed bus stop.
One police vehicle had blocked the path of a dark grey car, which was pictured with its boot open, while two marked cars stopped nearby.

Several armed cops were also seen examining the vehicle.
A man in handcuffs was seen being spoken to by two plain-clothed officers.

The exact nature of the incident is not currently known.
Police Scotland spokesperson said: "Police are currently in attendance on Sauchiehall Street, Glasgow, carrying out enquiries into an ongoing investigation."