State department had offered a $7m reward for Abubakar Shekau, believed killed or badly injured
The US government has told Islamic State-affiliated fighters in Nigeria they are not eligible for a reward following reports that the leader of Boko Haram had died during clashes in a forest in the north-east.
The US state department had offered $7m (£4.9m) for information about the identity or location of Abubakar Shekau as part of its global counter-terrorism rewards programme aimed at tracking down leading violent extremists and other fugitives.