Islamic State spokesman and head of external operations Abu Muhammad al-Adnani, one of the jihadist group's longest-serving and most prominent leaders, has been killed in Aleppo province in Syria, it has said.
Adnani had been one of the last remaining members alive of the group that founded Islamic State, also known as Islamic State in Iraq and Syria and by its Arabic acronym Daesh, along with the group's self-appointed caliph Abu Bakr al-Baghdadi.
As Islamic State's spokesman, he was its most visible member. As head of external operations, he was in charge of attacks overseas, an increasingly important tactic for the group as its core Iraqi and Syrian territory has been eroded by military losses.
Islamic State's Amaq News Agency reported that Adnani was killed "while surveying the operations to repel the military campaigns against Aleppo". Islamic State holds territory in the province of Aleppo, but not in the city where rebels are fighting Syrian government forces.
Amaq did not say how Adnani, born Taha Subhi Falaha in Syria's Idlib Province in 1977, was killed. Islamic State published a eulogy dated August 29 but giving no further details.
Recent advances by the US-backed Syrian Democratic Forces, an alliance of Kurdish and Arab militias, and by Syrian rebels backed by Turkey, have made inroads into Islamic State holdings in Aleppo province, cutting them off from the Turkish border and supply lines along it.
There are conflicting reports as to where and how he died.
A senior Syrian rebel official said Adnani was most probably killed in the Islamic State-held city of al-Bab in an air strike. Citing unconfirmed reports, he said Adnani was in the Aleppo region to raise morale as the group comes under mounting pressure.
Hisham al-Hashimi, a security analyst who advises the Iraqi government on Islamic State, said Adnani was injured in a coalition strike on August 17 near al-Rai, north of Aleppo, where Islamic State is fighting Turkish and US-backed Syrian rebels.
Hashimi said he died from his wounds on Monday.
A US counter-terrorism official who monitors Islamic State said that Adnani's death will hurt the militants "in the area that increasingly concerns us as the group loses more and more of its caliphate and its financial base ... and turns to mounting and inspiring more attacks in Europe, Southeast Asia and elsewhere".
The official said Adnani's role as propaganda chief and director of external operations have become "indistinguishable" because the group uses its online messages to recruit fighters and provide instruction and inspiration for attacks.
FACE OF GROUP
Iraq said in January that Adnani had been wounded in an air strike in the western province of Anbar and then moved to the northern city of Mosul, Islamic State's capital in Iraq.
Adnani is a Syrian from Idlib, southwest of Aleppo, who pledged allegiance to Islamic State's predecessor al Qaeda more than a decade ago and was once imprisoned by US forces in Iraq, according to the Brookings Institution.
He has been the chief propagandist for the ultra-hardline jihadist group since he declared in a June 2014 statement that it was establishing a modern-day caliphate spanning swaths of territory it had seized in Iraq and neighbouring Syria.
Adnani has often been the face of the Sunni militant group, such as when he issued a message in May urging attacks on the United States and Europe during the holy month of Ramadan.
Adnani is likely to be succeeded in his military role by the financial comptroller of the group, Iyad al-Obaidi, also known as Saleh Haifa, a security officer and Saddam, Hashimi said.
The United States designated him a "global terrorist" this year and says he was one of the first foreign fighters to oppose US-led coalition forces in Iraq since 2003 before becoming spokesman of the militant group.
There is a $US5 million reward on his head under the US "Rewards for Justice" programme.
