Supporters of Iran-backed Iraqi militia groups stormed the offices of the Saudi television channel MBC in the early hours of Saturday morning after a broadcaster described a militia commander as a "terrorist," according to international media reports.
Some 400-500 people were involved in the attack on the office, according to Agence France-Presse.
"They wrecked the electronic equipment, the computers, and set fire to a part of the building," an anonymous member of the interior ministry source told AFP, adding that fires have since been extinguished at the premises.