UK's May "receiving regular updates" on London incident - PM's office

LONDON - 15 September 2017: British Prime Minister Theresa May is being regularly briefed after armed police rushed to an incident at a London underground station on Friday, with local media reporting there had been an explosion on a packed rush-hour commuter train.

"The prime minister is receiving regular updates," a spokesman from May's office said when asked if May was aware of the incident.