A fire alert warning was issued at 6am on 23 May 2019, announcing that the line has no service between Finchley Road and Waterloo.
Firefighters evacuated 59 people through the underground tunnel at Bond Street, and emergency services were called to Baker Street and Bond Street, where four passengers were reported to be treated for smoke inhalation.
Transport for London (TFL) declared an investigation to find out what caused the fire shortly after the closure and evacuation.
London Fire Brigade confirmed that the fire was caused by “mechanical failure”.
A TFL spokeswoman said “engineers [were] on site at Bond Street to fix the issue and we hope to resume services as soon as possible”.
By 2:40pm, TFL announced that the line was back to good service.
https://twitter.com/jubileeline/status/1131548914660925440
