Al-Murabitoun, a jihadist group run by notorious one-eyed Algerian militant Mokhtar Belmokhtar that claimed responsibility on Friday for a deadly attack in Mali, was founded in 2013 and presents itself as the West African branch of Al-Qaeda.

Al-Murabitoun was born of the fusion of Belmokhtar’s Al-Qaeda breakaway group ‘Signatories in Blood’ and MUJAO, one of the jihadist groups that seized northern Mali in early 2012.

In an audio recording broadcast by Qatar-based Al-Jazeera network on Friday, the group claimed Friday’s attack on the Radisson Blu hotel in Mali’s capital Bamako, in which 27 people died.

‘We the Murabitoun, with the participation of our brothers from Al-Qaeda in the Islam Maghreb, claim the hostage-taking operation at the Radisson hotel,’ said a man’s voice.

France’s defence minister Jean-Yves Le Drian also said the group was ‘likely’ behind the assault.

Belmokhtar, a former leader of Al-Qaeda in the Islamic Maghreb, has on several occasions been declared dead, notably in last June and in April 2013, but his death was denied.

An audio recording attributed to another leading member of Al-Murabitoun in May pledged allegiance to the Islamic State jihadist organisation.

But Belmokhtar, nicknamed variously as ‘The Uncatchable’ and ‘Mr Marlboro’, reportedly quickly distanced himself from the declaration, vowing allegiance to IS’s jihadist rival Al-Qaeda in what was seen as a sign of a power struggle.

Belmokhtar’s ‘Signatories in Blood’ faction allegedly masterminded the January 2013 siege of an Algerian gas plant in which around 40 hostages, mainly Westerners, were killed.

MUJAO is one of the Al-Qaeda-linked groups which controlled northern Mali for nearly a year, between spring 2012 and the beginning of 2013. They were largely driven out by French forces.

On 23 May 2013, a double suicide attack left 25 dead, mainly soldiers, in northern Niger. The attacks were claimed by ‘Signatories in Blood’ and ‘MUJAO’.

Three months later the two groups announced they were merging.

Al-Murabitoun has already claimed responsibility for the first attack on Westerners in the Malian capital on March 7. Three Malians, one French national and a Belgian were killed in the nightclub attack.

The group claimed also a 15 April suicide attack against Niger’s contingent at a UN base in the north and a 14 July, 2014 suicide attack in the northern city of Gao, in which a French soldier was killed.

In Burkina Faso, a country previously spared by hostage-takings and terror attacks, the group claimed the abduction in April of a Romanian who was responsible for security in a mine in the north.