A Chadian minister has been detained by police following reports that he had married an underage girl.

Azzai Mahamat Hassane's lawyer has denied that his client's wife is a minor.

French-language news broadcaster RFI quotes a state prosecutor as saying Mr Hassane married the girl in a "customary ceremony" in 2017 when he travelled to the western town of Nokou with a political delegation.

Marriage in Chad under the age of 18 is illegal, and people found to have married minors or offered underage children for marriage face prison.