A Rwandan national has been re-arrested in the French city of Nantes and charged with arson, following a fire that damaged the city's 15th Century Gothic cathedral a week ago.

The 39-year-old man, who worked as a volunteer warden at the cathedral, was detained but released last week.

French newspaper Le Monde quotes a prosecutor as saying the suspect has "admitted" to being responsible for the fire that broke out in three different places.

His lawyer is quoted as saying the man "bitterly regrets" his actions.

The fire destroyed the cathedral's 17th Century organ, as well as historic stained glass windows.