US rapper ASAP Rocky will not perform at the Longitude Festival in Dublin on Friday night.
He was due to headline the main stage, but has been detained by Swedish authorities in relation to an alleged assault last weekend.
He was arrested after a gig at the Smash festival on Tuesday in Stockholm.
He is now set to be held for two weeks.
His place on the main stage at Longitude in Marlay Park has been taken by another rapper, known as Ski Mask The Slump God.
Police say four people were initially arrested - three of them suspected of serious abuse and one of assault.
However, the person suspected of assault was released on Wednesday and is no longer a suspect.
An appearance by ASAP Rocky at a festival in Norway has also been cancelled, according to Swedish broadcaster SVT.