The US State Department is denying any deal-making or “good-will diplomacy” was behind the impending release of Kassim Tajideen, a Lebanese-Belgian businessman and convicted financier of the militant organisation Hezbollah.

Jamal Zeina split from group once known as Nusra Front earlier this year to set up a new hardline organization.

Extremist reporting in the UK prison system and the top security service, MI5, failed to assess the threat from Libyan asylum seeker Khairi Saadallah in the months before the terror incident that killed three people on Saturday.