The Clyde Tunnel has been block after emergency services rushed to the scene of a two-vehicle crash which saw one car 'flip over'.
The incident occurred just before 12pm, causing the road to be unusable going soutbound, with traffic back towards the Expressway.
One witness told Glasgow Live they saw a car flipped on its side. Police have confirmed that no one was injured during the incident.
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They tweeted: "The public are advised that the Clyde Tunnel is blocked Southbound, following a two-vehicle crash.
"There have been no serious injuries reported and recovery is being arranged. Motorists should avoid the area.
"There is a diversion in place on to the Clydeside Expressway."
It is believed that the tunnel has reopened, however, traffic is still very heavy in the area.
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