Saudis

Crown Prince Mohammed bin Salman says the 26,500 sq km (10,232 sq mile) NEOM zone will be developed in the north-west, extending to Egypt and Jordan.

It will focus on nine sectors including food technology and, energy and water.

The crown prince has been leading a drive to move Saudi Arabia away from its dependence on oil

In August, the Gulf kingdom launched a massive tourism development project to turn 50 islands and other sites on the Red Sea into luxury resorts.

Militants had plotted to car-bomb a World Cup 2018 qualifying game between Saudi Arabia and the United Arab Emirates in October, it says.

The authorities also say they have foiled a second plot directed by Islamic State (IS) militants to kill security officials near Riyadh.

Eight suspects have been arrested from two "terrorist cells", offficials say.

Among them are Saudi nationals, two Pakistanis, a Syrian and a Sudanese, the Saudi interior ministry says.