Feel good story of the day.

DAMASCUS, Syria (AP) — A local al-Qaeda commander was killed Thursday in northern Syria in ongoing clashes with Kurdish militiamen, the second to die in a week of infighting between extremist and moderate rebel factions.

UN experts resumed their probe into the use of chemical weapons in Syria’s civil war, but the rebel-against-rebel violence may further complicate their work on the ground.

The intensifying power struggle between disparate factions fighting to topple President Bashar Assad is threatening to further encumber a rebellion plagued by divisions and outgunned by the regime.

The ISIL commander was killed in clashes with Kurdish militiamen in Aleppo province, activists said. Fighting between the two sides in predominantly Kurdish regions of the north has gone on for months, killing hundreds of people on both sides.

The man, identified by the Observatory as a UAE national and the emir — or local commander — of Aleppo, died Wednesday night.

On Monday, a top al-Qaeda commander was killed in an ambush by rival Western-backed rebels from the Free Syrian Army rebel umbrella group.