The BBC has asked the Angolan government to comment. But according to a source from the Migration and Aliens Service (SME), "the expulsion was due to irregularities in the visa procedure, which prevented Mondlane and 13 other members of his entourage from entering Angolan territory".

Angola said on Tuesday it would attempt to broker direct talks between Democratic Republic of Congo and Rwanda-backed M23 rebels in the coming days.

Angola has announced plans to act as a mediator in the conflict between Congo and the Rwandan-backed rebel group M23.

Democratic Republic of Congo and M23 rebels will engage in direct negotiations in the coming days to end the conflict in the country’s mineral-rich east, according to the presidency of Angola, which will mediate the talks.