British teacher David Bolam has been released after being held hostage in Libya for around five months.

British teacher David Bolam has been released after being held hostage in Libya for around five months, the Foreign Office in London said Saturday.

Officials said they were "glad that David Bolam is safe and well after his ordeal and that he has been reunited with his family".

It did not give further details but Bolam was kidnapped by militants in May in Libya's second city Benghazi, much of which is under the control of militants.

Bolam is a teacher at the international school in Benghazi. A US teacher from the same school was shot dead in December.

The SITE intelligence group identified a video posted on YouTube last month of Bolam appealing for British Prime Minister David Cameron to help secure his release.

The video, apparently recorded in August, was released by a group that called itself Jeish al-Islam (Army of Islam) but SITE could not authenticate it due to a lack of information.

Libya has been sliding into chaos since former leader Muammar Gaddafi was toppled in an uprising three years ago, with interim authorities confronted by powerful militias that fought to oust him.