An American woman has filed a $9.2m (£5.9m) lawsuit against the pop star Justin Bieber for permanent hearing loss she alleges was caused by the screams of his fans.
Stacey Wilson Betts says she sustained the damage at his concert in Portland, Oregon two years ago after Bieber climbed into a heart-shaped gondola and was pulled over the crowd.
In the suit, the mother of five alleges that Bieber enticed the fans into a "frenzy of screams" by waving his arms, and the sound exceeded safe decibel levels.
The gondola "acted as a sound conductor, creating a sound blast that permanently damaged both my ears," the lawsuit says.
Betts, who attended the concert with one of her daughters, is seeking money for medical expenses, pain and suffering and loss of quality of life.
The lawsuit lists Bieber as a defendant, as well as his label Island Def Jam Records and Vulcan Sports and Entertainment, which owns the arena in which the July 2010 concert took place.
The lawsuit says Betts has been seeing ear specialists because of hearing loss, severe tinnitus and hyperacusis, a sensitivity to sound.