General Secretary Mick Cash said;

"RMT is aware of the incident at Parsons Green this morning and the unions safety reps are awaiting further facts from London Underground. The union is supporting our members at this time.

"The incident shows once again that tube staff are the first responders in emergency situations and the clear need for safety and security to remain the number one priority and for the resources and staffing to be in place to deal with all eventualities."