Euston Station has been emptied by police.
System Rail told the Independent UK the station was emptied because of “a security caution”.
Officers from the British Transport Police are at the scene and are managing the episode.
BTP said “an electrical thing is accepted to have caused a little contained blast”.
Nobody was harmed.
Witnesses said travelers were seen coming up short on the station in freeze.
Unverified reports said smoke was seen originating from a thing of gear on the fundamental station concourse.
— Amichai Stein (@AmichaiStein1) August 29, 2017