Britney Spears has checked into a treatment facility following a DUI arrest last month. A rep for Spears confirmed to The Hollywood Reporter that the singer voluntarily entered rehab on Sunday.

A representative for Spears said in an email to The Associated Press on Sunday that the 44-year-old pop superstar had voluntarily checked herself into the facility.

The California Highway Patrol said the pop singer was arrested in Ventura County after officers stopped her black BMW following a report that ​it had been traveling erratically at high speed.