Gunmen have launched an attack on the Radisson Blu Hotel in the centre of Mali's capital, Bamako.
The hotel's owners said that two people had locked in 140 guests and 30 employees, the AFP news agency reports its statement as saying.
Police have surrounded the hotel, which the gunmen entered shooting, and shouting "God is great!" in Arabic, a security source told Reuters.
Some reports say about 10 gunmen in total are believed to be involved in the incident.