Members of the kingdom's Shi'ite minority tend to keep their visits to Iran secret as a bitter rivalry oppose the two countries. Sunni-led Saudi Arabia cut diplomatic relations with Iran in January 2016.
"If you were in Iran in the past 14 days, take the initiative and declare it; protect your health and the health of your family," said the Saudi civil aviation authority tweet.Iran has reported one of the largest number of deaths because of the coronavirus outbreak outside China - 124 up until Friday.