Prosecutors at the trial of the Rwandan political activist Diane Rwigara have asked for a 22-year prison sentence.

The critic of President Paul Kagame, who tried to run for president last year, denied charges of inciting insurrection and forging documents.

In a court in the capital, Kigali, she stood by her assertion that Rwanda's economy was mainly controlled by a governing party elite and she argued that the trial was meant to kill her off politically.

Her mother, Adeline Rwigara, was also in court accused of inciting insurrection - a term used to mean calling people to revolt - and promoting sectarianism.

The campaign group Amnesty International has called for the charges to be dropped arguing that freedom of expression should not be on trial in Rwanda.

A verdict is due next month.