Brooke Mueller to enter rehab again

Brooke Mueller, the estranged wife of Charlie Sheen, is entering a rehab centre in Mexico, according to a U.S. report.

Mueller is heading to a treatment facility in Cancun for an intensive seven-day stint in a bid to finally overcome her addiction demons, according to TMZ.com.

The 33-year-old, whose substance abuse problems began when she was a teenager, completed her latest rahab stay in May.

The American actress and Sheen married in 2008, later having twins. In 2009, Sheen was arrested out their house in the ski resort in Aspen for assualting Mueller.

The pair divorced in May this year.