Scott Weiland
Mark Von Holden/WireImage
Weiland attorney Tony Brooklier says the singer, 40, completed 28 days in a treatment facility after checking in early last month. Weiland, whose treatment forced the band to cancel tour dates in February, is "doing well," Brooklier said.
Weiland was charged with driving under the influence of drugs after the former Stone Temple Pilots singer's arrest last November.
