Still image from video shows the lobby of the Radisson hotel in Bamako, Mali, November 20, 2015.[Photo/Agencies]

Malian President Ibrahim Boubacar Keita cut short a trip to a regional summit in Chad, his office said.

Northern Mali was occupied by Islamist fighters, some with links to al-Qaida, for most of 2012. They were driven out by a French-led military operation, but sporadic violence has continued in Mali's central belt on the southern reaches of the Sahara, and in Bamako.

One security source said as many as 10 gunmen had stormed the building, although the company that runs the hotel, Rezidor Group, said it understood that there were only two attackers.

Al Mourabitoun has claimed responsibility for a number of attacks in Mali, including an assault on a hotel in the town of Sevare, 600 km (375 miles) northeast of Bamako, in August in which 17 people including five UN staff were killed.

One of its leaders is Mokhtar Belmokhtar, blamed for a large-scale assault on an Algerian gas field in 2013 and a major figure in insurgencies across North Africa.

In the wake of last week's Paris attacks, an Islamic State militant in Syria told Reuters the organisation viewed France's military intervention in Mali as another reason to attack France and French interests.

"This is just the beginning. We also haven't forgotten what happened in Mali," said the non-Syrian fighter, who was contacted online by Reuters. "The bitterness from Mali, the arrogance of the French, will not be forgotten at all."