Authorities in Mali say al-Qaida's North Africa branch has freed a Swiss hostage abducted in January.
Officials announced the release Sunday, but gave no further details.
Werner Greiner was abducted in late January with three other Westerners near the Mali-Niger border.
The al-Qaida group earlier freed two of the women in the group, but killed British national Edwin Dyer.
Some information for this report was provided by AFP and Reuters.
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