RIYADH — A Palestinian national was arrested in Riyadh after he appeared in a video clip and made comments that are aimed to harm the Kingdom's national security. Maj. Khaled Al-Kraides, spokesman of Riyadh police, said that the security authorities have arrested the Palestinian, for circulating a video in which he makes comments that are harmful to the national security and public order. The video also contains offensive remarks against the Saudi rulers. It was found in investigations that the man was using drugs. The accused was referred to the Public Prosecution after completing the legal procedures, the Saudi Press Agency reported.