The leader of Western Sahara’s independence movement, Brahim Ghali, is due to appear before a Spanish court to answer allegations of torture and genocide.
The head of the Polisario Front is being treated for Covid-19 in Logroño, northern Spain, and will testify via a video link with Madrid’s National Court.
Mr Ghali’s presence in Spain has angered Morocco, which claims the former Spanish colony.
Last month more than 8,000 Moroccans crossed the border into Spain’s North African enclave of Ceuta in an action which Spanish politicians say was supported by the Moroccan authorities.
Source: BBC