Armed Police and Police cars including a custody van and a dog van but the dog was not deployed.
Ten plus Six Armed Offices with large guns were at the Watford Junction Station.
Officers had intelligence of a man who was on the Virgin Train from London Euston to Birmingham.
It is unsure but one witness said the train had be held while police boarded.
The man was shouting that he had been arrested for being drunk and disorderly.
WTF is going on at #watfordjunction? pic.twitter.com/skM1BiHo52
— David Trussler (@davidTrussler) February 15, 2018
We are waiting for more info. We have no info is he had a knife or known to be violent.
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