02/22/2007 AT 01:55 PM EST
02/22/2007 AT 11:35 AM EST
Britney Spears has returned to rehab, PEOPLE has confirmed.
Mark Vincent Kaplan, a lawyer for Spears's estranged husband, Kevin Federline, confirmed through a spokesman that the pop star has entered a treatment facility – and that a custody hearing over the couple's two sons has been canceled
According to the spokesman, no emergency papers
will be filed as had been planned in the custody matter.
On Wednesday evening, Spears drove to Federline's house in the San Fernando Valley, where she had a confrontation with a photographer who was among a group of paparazzi following her. Amid the commotion, it was not clear if the singer ever spoke to her estranged husband. Spears's mother, Lynne, was also spotted at the scene.
first reported that Spears had gone back to rehab.
On Tuesday, Spears, 25, entered the Promises rehab facility in Malibu, only to check out
the following day.
Leaving the clinic "was against their advice," a source told PEOPLE Wednesday.
Before entering rehab, Spears had a wild weekend of alarming behavior – capped by the night she shaved her head
Last week, the singer also visited Eric Clapton's Crossroads Centre in Antigua but left after just one day and headed to Florida, a source told PEOPLE on Friday.
"She spent a fair amount of time there, about two hours," says a local source. "She walked around and checked it out."