Police in Hong Kong discovered a stash of a powerful homemade explosive as the semi-autonomous Chinese city readied for another major pro-democracy protest on Sunday following a pro-Beijing rally that attracted thousands.

A Danish prosecutor says a 16-year-old girl has been formally charged with planning bomb attacks against two schools in Denmark.

Following three blasts in Brussels earlier this week that killed more than 30 people, Belgian authorities announced they had discovered ingredients for a deadly explosive known as the "mother of Satan" in a jihadist hideout.