Islamic State's chief singer-songwriter has been killed in an airstrike in Syria, according to pro-ISIS social media accounts.

Maher Meshaal died in the strategic city of Hasakah which has been bombed by both United States-led forces and the Syrian government.

His songs and voice featured on many of the terror group's gruesome propaganda and execution videos.

The man also known as Abu Zubair al-Jazrawi was a famous Islamic chant singer before he left Saudi Arabia for Syria in 2013.

Deceased: Islamic State's chief singer-songwriter Maher Meshaal (pictured) has been killed in an airstrike in Syria

Bombed: Meshaal was reportedly killed in the strategic city of Hasakah (pictured) which lies near the Iraqi and Turkish border

It is unclear whether the bombing which killed Meshaal was carried out by the United States-led coalition or the Syrian government forces.

Two of his most famous songs - 'Saleel al-Sawarem' and 'Halomoo O' Lions of War' - are famous among Islamic State's fanatical following and widely used in propaganda videos, ARA News reports.

It claims 'Saleel al-Sawarem' celebrates the 'martyrdom' of ISIS jihadists in its war against the West.

Meshaal spent five years working as an Islamic 'chanter' and an imam at a mosque in Riyadh, Saudi Arabia, before joining ISIS in April 2013, the Saudi Gazette claims.

Another chanter he met in ISIS-controlled parts of Syria told the website how he escaped soon after joining the group because it was so barbaric.

Extremist: Songs composed and sung by Meshaal (pictured) have featured on many of the terror group's gruesome propaganda and execution videos

Destroyed: It is unclear whether the bombing which killed Meshaal in Hasakah (pictured) was carried out by the United States-led coalition or the Syrian government forces

But Meshaal stayed behind, continued to write songs which urged Muslims to join ISIS and also used his Twitter account to convince young Saudis to join the group.

US-led forces in the Middle East intensified its bombing campaign on ISIS locations in Iraq and Syria over the weekend.

As well as the 29 strikes carried out in Iraq, there were at nine one ISIS forces inside Syria - including near the city of Hasakah where Meshaal was supposedly killed.

Although the recent bombing campaign has injured militants, ISIS is still in control of southern parts of the city, an anti-ISIS activist in Hasakah told ARA News.

The terror group has controlled southern parts of the city for weeks although the Syrian regime and Kurdish fighters have managed to regain some parts.