The moment Justin Timberlake gets slapped by fan

A California man has been arrested for disorderly conduct after Justin Timberlake says he got too physical with him last weekend during the American Century Celebrity Golf Championship at Lake Tahoe.

Keith Weglin, 29, of Sacramento was booked into the county jail for the misdemeanour on Saturday afternoon, posted $US640 ($A857) bail and was released late that night, Douglas County Undersheriff Paul Howell said on Tuesday.

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TMZ first reported on a video showing someone's hand slapping or touching Timberlake on the back of his neck as the singer walked through the gallery between holes during second-round play at Edgewood Tahoe Golf Course in Stateline about 96 kilometres south of Reno.

Timberlake could be heard saying, "Bro, why would you do that?"

Howell told The Associated Press Weglin was arrested for his conduct as deputies were escorting him from the course "after the 'touching' of Timberlake".

"It is not related to the contact he made with him," Howell said in an email.

Timberlake's representatives did not immediately respond to a request for comment on Tuesday.

Weglin did not immediately respond to a telephone call seeking comment.

It was not immediately clear if he had a lawyer.

Howell said it will be up to the district attorney's office to decide whether to file formal charges.

Douglas County District Attorney Mark Jackson said in an email to AP he was out of the office and not immediately available for comment on Tuesday. His deputy district attorneys did not immediately respond to a request for comment.

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