Nerve Agent Used on Sergei Skripal

Anti-terror police in Britain are working to establish the origin of a nerve agent which was used to try to murder a former Russian spy and his daughter. The police have identified but not named the substance.

The Sri Lankan government says more troops have been deployed to the central district of Kandy, to try to end days of violence against Muslims. We speak to the brother on a man who was killed.

Health authorities in Nigeria say they're facing an unprecedented outbreak of Lassa fever. It's a serious viral disease. Initial symptoms resemble a fever but if untreated can go on to include bleeding, shock and seizures.