Euston Station has been evacuated by police after an e-cigarette is believed to have caused "a small contained explosion".

Network Rail told the Independent the station was evacuated due to "a security alert" just before 8pm.

The British Transport Police (BTP) said "an electrical item is believed to have caused a small contained explosion".

It later added an e-cigarette in a bag is likely to have been the cause of the explosion.

No-one was injured and officers from the BTP and search dogs checked the scene to ensure the area was safe.

Network Rail said the station reopened but significant delays are expected on the service because of the incident.

Pictures show huge queues as people gather on the station's concourse waiting for the service to resume.

Passengers waiting for service to resume after Euston station was evacuated because of a "small explosion" (Josh Withey)

Earlier in the evening, witnesses said passengers were running out of the station in panic.

Bystanders claimed to have seen smoke coming from an item of luggage on the main station concourse.

Mykola Kuzmin, 20, was working at the Leon restaurant on the station's first floor when people started running into the restaurant.

Mr Kuzmin, who claims to have been on Westminster Bridge and not far from London Bridge when the terror attacks happened, described scenes of sheer panic in the station.