Boko Haram leader urges fighters to 'kill, slaughter and abduct ... and detonate bombs'

Boko Haram's leader has urged his fighters to "kill, slaughter and abduct ... and detonate bombs everywhere" in a new video which denies Nigerian government claims that his Islamic extremist group has been crushed.

President Muhammadu Buhari declared last week that soldiers had driven Boko Haram from its last forest enclave in the north-east, boasting "the terrorists are on the run, and no longer have a place to hide".