Ms Bachelet who is visiting the Sahel region left Burkina Faso for Niger on Wednesday.

During her Burkina Faso visit she met President Roch Marc Christian Kabore who she asked to ensure those violating human rights are brought to justice.

She opened a UN rights office in the capital Ouagadougou to monitor the situation.

The country is facing insecurity due to the activities of armed groups.

Security forces have in the past been accused of human rights violations while fighting militants in the country.