Suellen Tennyson, who is 83, was taken hostage in the middle of the night in early April.

She was barefoot and left behind her glasses and blood pressure medication.

The bishop of the diocese where she served, Theophile Nare, said the nun was currently in a safe place and in good health.

He said he did not have any information on the conditions of her release.

The identity of the kidnappers is not known but several militant groups have carried out attacks in Burkina Faso.