Footage apparently taken at the scene shows a number of emergency vehicles parked on a residential street in Maida Vale in London’s Paddington area.
One person was left unconscious with “several” others endangered by the alleged leak reported on social media.
Traffic reports claim the A5 Kilburn High Road between Oxford Road and Maida Vale has been closed in both directions due to an “emergency services incident.”
Express.co.uk has contacted the Metropolitan Police for more details on this ongoing incident.
THIS IS A BREAKING STORY. MORE TO COME…