Singer/songwriter Ryan Adams' UK tour has been canceled following claims of sexual misconduct and abuse.

Adams' ex-wife, Mandy Moore, was among the four women who spoke to the New York Times about his alleged abuse. It is also being reported that the FBI is also looking into claims involving an underage girl. It is alleged that he exposed himself to the 14-year-old over Skype.

This is more bad news for the star who has already been removed from several high profile radio stations and his upcoming album 'Colors' has been placed on hold by the label.

"Mr. Adams unequivocally denies that he ever engaged in inappropriate online sexual communications with someone he knew was underage," Adams' attorney told The Times.