Three days of mourning have been declared following the death of HH Sheikh Rashid bin Mohammed bin Rashid Al Maktoum.
Sheikh Rashid was the eldest son of HH Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai.
According to a report by UAE national news agency WAM, Sheikh Rashid died of a heart attack.
WAM said funeral prayers will be held at Zaabel Mosque on Saturday night.
UAE flags will be flown at half mast at all Dubai government offices during the mourning period.