Bodyguards with swords and submachine guns arrested the prince. The king was quickly rushed to a hospital but doctors failed to save him. Initial reports described Faisal bin Musaid as "mentally deranged." He was moved to a Riyadh prison. He was deemed sane to be tried. He was found guilty of murder. Hours after the verdict, he was publicly decapitated in Riyadh. The assassin's brother Bandar was also imprisoned, but was released a year later. Prince Musa'id did not hold any significant administrative positions and hence he was sidelined for the throne. The involvement of his son Faisal in the assassination of King Faisal could also have weakened his position. In addition he seemingly never sought one. He gradually lost his eyesight after the death of his first son, Khalid. He lived an austere private life where he was known to be pious. The Royal Diwan announced that Prince Musa'id had died on 19 August 2013. He was the second eldest living son of Ibn Saud at the time of his death next only to Prince Bandar bin Abdulaziz Al Saud. It was announced that funeral prayers for the late prince would be held at Imam Turki bin Abdullah Mosque in Riyadh the next day and a three-day mourning period was also declared.