LONDON — Amy Winehouse pleaded not guilty Tuesday morning to an assault charge stemming from an alleged fan attack last year, The Associated Press reports.

The 25-year-old singer is accused of attacking the fan at a London charity ball last September. According to published reports, the incident took place at the End of Summer Ball in London's Berkeley Square on Sept. 26. A dancer, identified as Sherene Flash, claims Winehouse hit her in the eye after she asked the British retro-soul singer to take her picture.

Judge Timothy Workman set a trial date of July 23 and Winehouse was released on unconditional bail.

The "Rehab" singer recently returned to England after an extended Caribbean vacation. Her return home included a move into the quieter Hadley Wood area of Enfield.

Winehouse has experienced her share of problems with substance abuse and run-ins with the law in recent time. In addition to several stints in rehab, she received a police warning last year after fighting with two men while partying at Camden's Dublin Castle pub.

Winehouse's legal troubles recently led to her canceling a planned appearance at next month's Coachella Valley Music & Arts Festival.