Amanda Bynes Arrested on DUI Charge

She was pulled over at 4 a.m. and charged with a misdemeanor.

— -- Amanda Bynes has been arrested for alleged DUI, ABC News has confirmed.

The California Highway Patrol confirmed that after the actress stopped in the middle of an intersection, she was pulled over and an officer determined that she appeared to be under the influence of a substance. After she failed a field sobriety test, Bynes was arrested at 4:10 a.m. on Sunday and charged with a misdemeanor. She booked by LAPD at a station in Van Nuys around 7 a.m. and held on $15,000 bail. She was released that day at 12:44 p.m. on her own recognizance.

Bynes was cooperative during the entire process, authorities said in a statement.

Last year was a troubling one for Bynes, 28. She was arrested in May 2013 for allegedly throwing a bong out of her New York City apartment window, though the case was dismissed in June 2014. Later in 2013, she entered rehab after being detained for a mental evaluation when she was involved in a disturbance in Thousand Oaks, California. Afterwards, her mother acted as her conservator, though it was not clear if she still was functioning in that role.

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Things seemed to be improving for Bynes, who left rehab in December and, shortly thereafter, enrolled in fashion school.

"She's doing extremely well. Her primary focus is bonding with her family and being a student," her attorney, Tamar Arminak, told People magazine in April, adding that Bynes was on "zero medication."

People also reported that, around that time, Bynes got her driver's license back following earlier legal troubles, including a 2012 DUI arrest. The magazine added that in February the actress pleaded no contest to a lesser alcohol-related offense in her DUI case to avoid jail time. As a result, she was placed on three years probation and had to attend a three-month alcohol education course and pay fines.

Bynes was due in court on this new charge on Oct. 23.