Court documents show she was arrested in Ventura County on Wednesday night.
Britney Spears has been arrested in California, US court documents show.
The singer was arrested by the California Highway Patrol at around 21:30 PT (05:30 GMT) on Wednesday.
She was released in the early hours of Thursday morning and is scheduled to appear in Ventura County Superior Court on 4 May.
The court documents do not confirm the reason for the singer's arrest.
The pop star appeared to have deleted her Instagram account on Thursday as news of her arrest broke.
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