Malian troops are continuing their advance, with the support of the French army, against rebels in the north of the country.
Northern Mali's most populous city, Gao, was captured by Malian and French soldiers on Saturday.
French Prime Minister Jean-Marc Ayrault said Malian and French troops would arrive "near Timbuktu soon".
There has not been string resistance by the rebels, with locals in Timbuktu reporting that militants had already fled in anticipation of the French advance.
Chad and Niger have also sent forces to assist the Malian army.
The US has pledged it would provide mid-air refuelling facilities for the French air force.