Britney Spears checks into rehab after DUI arrest

US pop superstar Britney Spears has voluntarily checked into a treatment facility following her DUI arrest last month near Los Angeles. The 44-year-old singer was arrested in early March and released shortly after, with a representative calling the incident "completely inexcusable." Spears is scheduled to appear in court for her DUI arrest on May 4, as she has stepped back from her music career in recent years.