There are less than 1,000 ISIS fighters across Iraq and Syria, according the US-led coalition fighting ISIS, Al Araby reported.

The new figure is nearly the third of the number suggested earlier this month.

In the past few weeks, both Iraq and Syria declared victory over ISIS while the U.S led an international coalition conducting airstrikes against ISIS since 2014.

Russia had announced the battle with ISIS in Syria is over on Wednesday, according to Al Araby.

Meanwhile, Russian Foreign Minister, Sergei Lavrov said the main task in Syria now is to destroy the Nusra Front, another Islamist group.

While most fighters have been killed in Iraq and Syria, doubts about others who might have escaped to other countries are still being asked, according to the coalition.

Earlier this week UAE banned Tunisian women from boarding after receiving that extremists were returning from Iraq and Syria.

More fighters are reportedly from Tunisian nationalities than from any other Arab state.