Paula Rojeski, 55, died Sept. 8 after having surgery at the Valley Surgical Center in West Hills, a clinic associated with the recently discontinued 1-800-GET-THIN advertising campaign. Autopsy results have not been released.
The Los Angeles Police Department confirmed to Eyewitness News that their robbery-homicide division is handling the investigation into Rojeski's death.
Rojeski is one of five patients who died after surgery at 1-800-GET-THIN clinics. In a lawsuit, two former workers at the surgery center say Rojeski died because of a series of medical errors, including the anesthesiologist's alleged failure to turn on the oxygen tank before surgery.
The Associated Press contributed to this report.