STOCKHOLM (Reuters) - U.S. rapper A$AP Rocky was arrested early on Wednesday on suspicion of serious assault after a brawl in Sweden’s capital, prosecutors said.

The 30-year-old performer, producer and model was held with three others in connection with a fight that took place on Sunday, a Prosecution Authority spokeswoman said.

“One person was arrested for assault and three people were arrested for serious assault, and the artist is one of those three,” she added.

A$AP Rocky was detained around 1 a.m. (2300 GMT Tuesday), the prosecution said, a few hours after his appearance at the Smash hip hop festival in Stockholm.

A Swedish lawyer representing the artist told Reuters his client denied wrongdoing.

“We are working hard with this and confident that the prosecutor will take a decision in favor of my client when he gets the full picture,” lawyer Henrik Olsson Lilja said.