The Malian Security Ministry said that attackers were "armed individuals, certainly terrorists", and no group has yet claimed responsibility for the attack yet.
Traore added that the militants had some accomplices who had not been killed or detained.
Authorities had said that security forces initially killed at least three assailants, and a fourth had escaped.
Several columns of smoke can be seen rising from the tourist complex and some sources said that the attackers have taken hostages, although that has not yet been officially confirmed.
One of the dead was a woman with dual Malian and French citizenship, the security ministry said on Facebook.
The Defence Forces say all of its members have been accounted for following a terror attack in Mali.
Four assailants were killed by security forces, Mali's security minister said late yesterday, without specifying if more were on the run.
One of them left behind a machine gun and bottles filled with "explosive substances".
The attack was claimed by Al-Qaeda's North African affiliate Al-Qaeda in the Islamic Maghreb (AQIM).
Niang said Bamako will continue to be a target in the coming weeks because "some jihadists in the past have been threatening the way alcohol is being exhibited openly by foreign troops and their allies across the country".
But there are wide areas of the country which are not under the control of Malian or worldwide troops.
Witness Boubacar Sangare was just outside the compound as the attack unfolded. "Westerners were fleeing the encampment while two plainclothes police exchanged fire..."
A spokesman for French forces in Mali declined to comment.
Malian special forces, backed by United Nations troops and French counter-terrorism force, rushed to the spot to free the hostages and end the siege.
The US embassy in Bamako had said that there is a chance of "possible future attacks on Western diplomatic missions, other locations in Bamako that Westerners frequent".
In November 2015, terrorists attacked a different hotel in Bamako, taking 100 people hostage and eventually leaving 20 dead.