Charlie Sheen's ex-wife Brooke Mueller, who was due to take at-home rehab treatment, has checked into a rehabilitation centre to deal with substance abuse problems.

"Brooke has decided to remove herself from the media spotlight and has entered a long-term in-patient treatment center where she can focus on her recovery without distraction," her representative said. reported that Mueller has "already arrived at the facility" but no further information will be released about her treatment.

"Brooke's goal is to maintain her sobriety and she believes this is the best option to reach that goal," a statement said. Mueller was arrested and released in Aspen, Colorado, for having cocaine with the intention to distribute.