Muscat, Jan 11: Oman's Sultan Qaboos bin Said has died, Aljazeera reported citing state television on Friday.
Qaboos was 79-year-old and was ill for a long time. He has served as the ruler of Oman since 1970 when he ousted his father in a bloodless coup.
Qaboos had no children and has not publicly named his successor.
Sultan Qaboos travelled to Belgium for a week in December for what was described then as "medical checks." He returned to Oman but speculations of his deteriorating health were rife.
Oman sultan Qaboos dies: State media