A British student has been jailed for al-Qaeda membership – after police used voice recognition to identify him as a masked man who made a militant speech in Syria on a YouTube video in 2013.
Mohammed Yamin, 26, from east London, had long returned from the conflict and resumed normal life.
But after he was spotted acting suspiciously in Whitehall in June 2017, detectives made the connection.
At the Old Bailey, Yamin was sentenced to 10 years and six months in prison.