A video is released showing the purported leader of Nigeria's Islamist group Boko Haram dismissing the army's allegations he is dead.

China issues a warning against "illegal acts" in Hong Kong, as protesters there vow to step up their campaign if the chief executive does not resign.

Michael Dunn is found guilty in the fatal shooting of Jordan Davis, a teenager shot during a row over loud music at a petrol station in Florida.

Save the Children says healthcare demands are far outstripping supply in Sierra Leone and warns that the Ebola outbreak there is getting worse.

Argentina's central bank governor Juan Carlos Fabrega resigns after less than a year in the job, as the country's economic troubles pile up.

The International Olympic Committee says it is satisfied with the progress made by Rio de Janeiro in its preparations for the 2016 Olympics.

Celebrities who had intimate pictures of themselves leaked onto the internet were "dumb" for taking them, the EU's new digital commissioner says.

The Mexican authorities say they have captured the head of a notorious drug crime syndicate, Hector Beltran Leyva.