Concrete falls on tube train after hole drilled through tunnel roof

Central line services were halted when debris landed on track apparently due to building work at a shopping centre An investigation will be held after contractors drilled a hole in a tunnel roof, causing concrete to fall on to a London Underground train.Central line services were halted on Monday night between White City and Marble Arch because debris fell on to the track and a tube train.EXCLUSIVE: Pictures of debris on Central line last night after Westfield contractors drilled through tunnel