Syrian Kurdish Forces Say They Killed Close al-Baghdadi Aide; Trump Says It Was Done by U.S.

Syrian Kurdish forces say that Abu Hassan al-Muhajir, Baghdadi's right-hand man and ISIS spokesman, was killed late on Sunday near Jarablus, a town in northwestern Syria

In this file photo taken on April 30, 2017 A member of the US-backed Syrian Democratic Forces (SDF) removes an Islamic State group flag in the town of Tabqa, about 55 kilometres (35 miles) west of Raqa city as they advance in their battle for the group's de facto capital.

The commander of Syria's Kurdish forces says his group's intelligence unit carried out a joint operation with U.S. troops in northern Syria hours, after the killing of Islamic State leader Abu Bakr al-Baghdadi, targeting his right-hand man and ISIS spokesman.

The commander, Mazloum Abdi, says that Abu Hassan al-Muhajir was killed late on Sunday near Jarablus, a town in northwestern Syria.

A senior State Department official confirmed al-Muhajir was killed in separate U.S. operation without mentioning Kurdish forces.

On Tuesday, U.S. President Donald Trump tweeted: "Just confirmed that Abu Bakr al-Baghdadi's number one replacement has been terminated by American troops. Most likely would have taken the top spot."

However, the tweet did not specify who he was referring to. 

Al-Muhajir's death would be another blow to the extremists.

The Britain-based Syrian Observatory for Human Rights also reported al-Muhajir's death, saying he was travelling in a convoy made up of an oil tanker and a sedan.

The report came hours after President Donald Trump announced al-Baghdadi was killed in a U.S. special forces operation in Syria's northwestern Idlib province.