More than 70 people have been arrested in Burkina Faso in connection with money laundering and the funding of armed groups.

The detainees are accused of being involved with fuel trafficking in areas where jihadist groups are active.

Investigators said the traffickers work at night, moving hundreds of thousands of litres of fuel across the country.

Nearly 1.5 million people have been displaced by intensifying Islamist violence in Burkina Faso.