British authorities have released Anjam Chaudhry, a hard-line preacher convicted of supporting an organization calling on a terrorist from a British prison.
The 51-year-old man left the heavily guarded Belmarsh jail in southeastern London on Friday and will be under strict surveillance.
Prime Minister Teresa Mae said the authorities were ready to supervise Chaudhry.
Chaudhry, from Elford, East London, is expected to wear an e-card and face a night curfew and will be denied access to anyone accused of crimes related to extremists unless he receives prior approval from the authorities.
In addition, Chaudhry's name has been added to the UN sanctions list, meaning the government can freeze assets and prevent him from traveling.
A court convicted Chaudhry in the summer of 2016 on charges of urging Dahesh, legitimizing the so-called "Caliphate" declared by the organization's leader Abu Bakr al-Baghdadi, and inciting terrorist attacks.
Chaudhry was sentenced to five years 'imprisonment, two and a half years' imprisonment, and was released under the "Good Conduct" Act.
The case highlights the problems faced by the British authorities in the fight against terrorism. Terrorists are sentenced to short prison terms and then go out into the street.
Chaudhry has a track record of terrorism. A group calling itself "The Immigrants", which belonged to Khoram Shahzad Butt, 27, was one of the perpetrators of the London Bridge terrorist attack, killing seven people.
Another student of the British preacher, two Africans, Michael Adibulago and Michael Adibwali, who sacrificed a soldier outside his southern London residence in 2013.
Chowdhury, an immigrant of Pakistani origin, was born in 1967 in Britain.
