IS leader Abu Bakr Al-Baghdadi has appeared in a video for the first time in five years.
Posted on the militant group's al-Furqan media network on Monday, Baghdadi announced that the Sri Lanka attacks were carried out as revenge for the fall of the Iraqi town of Baghuz.
He's sporting a bushy grey and red beard, wearing a black robe with a beige vest and seated on the floor with what appears to be a machine gun propped up next to him.
Baghdadi also referred to the political crisis in Algeria and Sudan.
The tapes are set to be inspected by analysts to ascertain its authenticity.

Earthquake in southwest China kills two with over 7,000 evacuated
Trump warns Iran ‘clock is ticking’ amid rising tensions
1 dead, over 30 injured after Russia launches overnight attack on Ukraine
Cuba accuses US of fabrication after Axios report alleging drone threat
Israeli strikes kill eight people in Gaza, medics say