Saudi Arabia issues aerial threat alert after explosion heard in Riyadh

Saudi Arabia warned of a "hostile aerial threat" and issued a string of emergency alerts across the kingdom, including in its capital, late Friday and early Saturday.

Also Saturday, Iran's state TV reported that a man was executed after being convicted on charges of spying for Israel's intelligence agency Mossad.

Here is the latest news from the Middle East on Saturday.

Alerts sound across Saudi Arabia for aerial threat ---------------------------------------------------- Saudi Arabia warned of a "hostile aerial threat" after issuing a string of emergency alerts across the kingdom late Friday and early Saturday, and at least one explosion was heard in the capital, Riyadh.

The alert heard in Riyadh was first for the Saudi capital since the latest escalation with Yemen's Iran-backed Houthi rebels.

No casualties or damage were reported after the alerts were lifted.

Saudi authorities didn't say what prompted the alerts or the cause of the audible explosions, but they previously repo