Gardaí are seeking help from the public in locating a missing 17-year-old girl.

Security at the Olympics is to be stepped up after bullets were believed to have been fired at a media bus.

The good vibes from Rio 2016's vibrant opening ceremony did not take long to fade this morning as reports emerged of athletes getting lost, fans stuck in queues and a fatal shooting witnessed by international film crews.

Algerian security forces are trying to bring to an end a four-day stand-off with Islamist extremists holding foreign hostages at a remote gas plant, a drama that has left at least 12 dead and horrified governments around the world.