Malian soldiers killed by a French military strike in northern Mali last month were deserters who had joined an Islamist militant group, a French source close to the matter said on Tuesday.
That contradicted comments from the Malian Defence Ministry, which said on Monday that the soldiers killed in the Oct. 23 strike, a raid on a camp of the Ansar Dine militant group, had been its hostages.
The French source said the raid was carried "on the basis of detailed intelligence against a camp that included Malians who had joined the Islamist ranks. They were hit, amongst others."
"They were not prisoners," the source told Reuters, declining to say how many were killed or captured in the raid.
The source accused Malian authorities of spreading propaganda in the run-up to presidential elections, which are scheduled for November 2018.
A French defence ministry source added: "We have a real trust problem with the Malians."
Malian officials were not immediately available for comment.
The French army previously said that 15 members of Ansar Dine, which is loosely affiliated to other militant groups operating in northern Mali, were taken "out of action" in the raid.
The Malian government is struggling to contain Tuareg and Islamist violence in the country's north, some of which is spreading south. Attempts to place officials in northern towns have sometimes failed, raising questions about the government's ability to maintain stability ahead of the elections.
Islamist militants seized northern Mali in 2012 and French forces intervened a year later.
Around 4,000 of its troops remain in West Africa's Sahel region as part of Operation Barkhane, a cross-border anti-terrorism operation.
France has also been at the forefront of organising a regional force as part of efforts to find a long-term strategy to exit the region.