A US woman has filed a 9.2 million US dollar (£5.9 million) lawsuit against pop star Justin Bieber, saying she suffered permanent hearing loss at a concert two years ago.
Stacey Wilson Betts filed the lawsuit on Wednesday in US District Court.
It says the mother of five sustained the injury at Justin's concert in Portland, Oregon, after he climbed into a heart-shaped gondola and was pulled over the crowd.
The lawsuit alleges the Boyfriend singer 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", it continues.
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 Justin as a defendant, as well as Island Def Jam Records and Vulcan Sports and Entertainment, which owns the arena where the July 2010 concert took place.
The lawsuit says Betts has been seeing ear specialists because of hearing loss; severe tinnitus, or noise or ringing in the ears; and hyperacusis, a sensitivity to sound.