Law enforcement officials are searching the Las Vegas home of the doctor who is suspected of administering Jackson a powerful anesthetic before he died, ABC News reports. Dr. Conrad Murray has been at the center of the manslaughter investigation, and Houston police already searched Murray's Houston office last week, where they were looking for "items constituting evidence of the offense of manslaughter that tend to show that Dr. Conrad Murray committed the said criminal offense," according to the warrants. DEA agents and police were present at the raid of Murray's home, but Murray himself is not believed to be at home. Dr. Murray has said through his lawyers that he did not "prescribe or administer anything that should have killed Jackson." Whether Murray will face criminal charges-and what those charges would be-remains unclear. If charged with administering propofol, Murray will have to prove why he would prescribe a drug meant for the operating room, and face questions over why he waited 30 minutes after Jackson became unresponsive to call an ambulance.