Nigeria is set to bring in a new rule that requires oil producers to obtain an export permit, vessel clearance and a unique identification number to enable real-time tracking of cargoes.

Britain has refused to grant an entry visa to South African politician Julius Malema, saying his presence in the UK is "not conducive to the public good."

More than 700 people are still missing following flash floods that struck central Nigeria's Niger state in May, killing at least 200 people, the state government has said.