A section of a Scotland's busiest motorway remains closed to traffic following a serious collision involving a heavy goods lorry. 

Police Scotland said that the M8 has closed between junctions 12 at Cumberland Road in Glasgow, and junction 13.

It is understood that two vehicles were involved in the crash. There has been no confirmation of any casualties.

A picture released by Traffic Scotland showed a heavy articulated lorry jack-knifed across the central reservation. 

Drivers have been advised to find alternative routes routes. 

Traffic Scotland said that vehicles are being forced to a standstill in both directions. 

UPDATED: Male arrested as M8 crash continues to cause travel chaos in Glasgow

The Herald:

The stretch of motorway affected by the accident Source: Traffic Scotland 

One eyewitness said: “It was the worst traffic accident I have ever seen. The traffic was completely gridlocked on the M8, I was driving up and saw a massive lorry had jackknifed and went over the central reservation and crashed right into the gantry sign.

"A fire engine and numerous police vehicles were there”

The accident is believed to have happened in the westbound lane, heading into the city.

All lanes have been shut, while those heading east were restricted to two lanes from five. 

Police Scotland Tweeted: "Due to an ongoing incident the #M8 is CLOSED between #J12 to #J13.

"Please AVOID the area and use an alternate route.

"Vehicles are being diverted from the motorway."

A spokeswoman for Police Scotland said: "Around 11:50am on Friday, 21 January 2022 police were called to reports of a two vehicle crash on the M8 westbound near junction 13.

"Officers are at the scene and the westbound carriageway is closed. One lane of the M80 slip road remains open. Enquiries are ongoing. Drivers are urged to use alternative routes."