A French court has sentenced a former rebel leader and politician from the Democratic Republic of Congo to 30 years in jail after finding him guilty of complicity in crimes against humanity more than two decades ago.

Roger Lumbala headed a rebel movement backed by neighbouring Uganda accused of committing atrocities during a period known as the Second Congo War.

The judge said the 67-year-old was found guilty of ordering or aiding and abetting torture and inhumane crimes, summary executions, rape constituting torture, sexual slavery, forced labour and theft.

Lumbala, who was living in France when he was arrested nearly five years ago, has refused to accept the legitimacy of the court in Paris.

He did not attend the trial, which began last month, though he was in the dock to hear the verdict on Monday.