BREAKING: Armed police hold man at gunpoint outside Parliament
![Police have arrested a man outside Parliament](https://www.yorkshirepost.co.uk/webimg/legacy_ash_91123976.jpg?crop=3:2,smart&width=640&quality=65&enable=upscale)
![Police have arrested a man outside Parliament](/img/placeholder.png)
Parliament has been put on lockdown this morning after armed police detained a man at gunpoint.
Pictures on social media show several armed police guarding a man wearing a hooded top.
It is believe the man may have been in possession of a knife.