"The Saudi residents of Khamees al-Mushait are waiting in a several-kilometer-long trail of cars to flee after their city was hit by Yemeni Scud missiles," the Arabic-language Sa'ada Press news website reported.

The Riyadh-based Ahrar al-Hejaz news website also reported that many Saudi princes have fled to western countries, especially France and Britain, after consecutive defeats of King Salman's army and plots, adding that some other princes are running away in anticipation of trial and punishment due to their opposition to the king's war on Yemen.

A high-ranking Yemeni official underlined that firing missiles by Yemen into Saudi Arabia meant to give a warning to the Riyadh government to stop its continued attacks against the neighboring country.

"The goal of targeting Saudi Arabia with Scud missiles was to warn Riyadh and we hope that it has grasped the meaning," Al-Mayadeen TV quoted the senior official, who asked to remain anonymous, as saying on Sunday.

The source reiterated that the Yemeni army has many options that it can use against Saudi Arabia if the monarchy does not halt its attacks against the Sana'a government.