Saudi Arabia has intercepted a ballistic missile from Yemen, reports say, after a loud explosion was heard near Riyadh airport, BBC reported.
Saudi air defence forces were quoted by broadcaster Al-Arabiya as saying they intercepted the missile north-east of the capital.
A TV channel linked to Houthi rebels in Yemen said the missile was launched at the King Khalid International Airport.
Saudi forces have reported shooting down Houthi missiles before.
No previous missiles have come so close to a major population centre.
State news channel Al-Ekhbariya said the missile was "of limited size" and caused no damage.