Two doors fell off a train carriage arriving at a MTR station on Thursday, after a billboard installed along the tracks of the station was dislodged and clipped the pair of doors on a passing train.

The train departed with the passenger's hand still trapped in the doors before they were pulled ... incident" and the operator of the service, MTR-Elizabeth line, was investigating.

But the doors shut on their hand and the train started moving ... A TfL spokesperson said the operator of the service, MTR-Elizabeth line, is currently carrying out a thorough investigation ...