armed police were deployed at ucl hospital , near warren avenue tube station , after reports of a suspects entering the hospital . there was speculation that many of the victims may have been assaulted and sought treatment at the hospital . a france yard official had added " we are interacting with an incident at university college hospital and we have armed officers mobilized there . we cannot go in any further detail at this stage . " a ucl spokeswoman confirmed that an email had been sent to staff asking them to be on the lookout for the killer . at 16 : 00 a spokesman for the metropolitan police stated that the confrontation was over , but armed officers returning to the campus 30 minutes later to watch the hospital . police have now also confirmation this is unrelated to the incident .
Police report there has been an explosion in the tube station.