LAS VEGAS , Nevada ( CNN ) -- Investigators searched the Las Vegas home and office of Michael Jackson 's personal physician , Dr. Conrad Murray , on Tuesday morning , a Drug Enforcement Administration spokesman said . Investigators arrive at the Las Vegas , Nevada , home of Michael Jackson 's personal physician . Los Angeles police and DEA agents , carrying search warrants , were `` looking for a lot of things , '' said Assistant Special Agent in Charge Mike Flanagan . Aerial cameras showed investigators leaving Murray 's home , three hours after they entered , carrying several containers . The searches came a day after a source with knowledge of the investigation confirmed to CNN that Murray administered a powerful drug that authorities believe killed the singer . Flanagan said that while he could not disclose details of the search warrants , because a judge had ordered them sealed , he confirmed they were looking for documents and computer records . Murray 's attorney , Ed Chernoff , issued a statement saying that officers from the DEA , Los Angeles police and `` various local agencies '' executed a search warrant at Murray 's home and office beginning about 8 a.m. ( 11 a.m . ET ) Tuesday . `` The search warrant authorized investigators to look for medical records relating to Michael Jackson and all of his reported aliases , '' the statement said . `` Dr. Murray was present during the search of his home and assisted the officers . '' Investigators left Murray 's home about noon , he said , taking cell phones and a computer hard drive . `` As of 2 p.m. , the search at Dr. Murray 's office continues , '' the statement said . Murray , a Texas-based cardiologist , allegedly gave Jackson the anesthetic propofol -- commonly known by the brand name Diprivan -- in the 24 hours before he died , said the source , who asked not to be named because the individual was not authorized to speak to the news media . Watch a profile of Murray » . In a statement Monday , the doctor 's attorneys said they would n't comment on `` rumors , innuendo or unnamed sources . '' In the past , they have said Murray never prescribed or administered anything that could have killed Jackson . Watch CNN 's Ted Rowlands report on drug allegation » . Last week , Texas authorities searched Murray 's Houston medical office and storage unit , looking for `` evidence of the offense of manslaughter , '' according to court documents . Among the items removed from Murray 's office were a computer ; 27 tablets of phentermine , a prescription-strength appetite suppressant ; 1 tablet of clonazepam , an anti-anxiety medication ; and some Rolodex cards . From Murray 's storage unit , authorities removed two computer hard drives ; an `` important contact list '' ; a suspension notice from Houston 's Doctor Hospital ; notices from the Internal Revenue Service ; and a laundry list of medical and hospital documents . Chernoff , a Houston lawyer hired by Murray soon after Jackson 's death , confirmed at the time that Los Angeles police detectives and federal DEA agents used a search warrant to enter Murray 's office in northeast Houston on Wednesday morning . Chernoff said members of Murray 's legal team were at the medical office during the search , which he said `` was conducted by members of the DEA , two robbery-homicide detectives from the Los Angeles Police Department and Houston Police officers . '' Police have interviewed Murray twice since Jackson 's death . A third interview was scheduled for July 24 , but was postponed after the search warrants were executed . It 's unknown when the next interview will take place . Among those who have indicated that Jackson may have been using dangerous prescription medication are nutritionist Cherilyn Lee , who said Jackson pleaded for the powerful sedative Diprivan despite being told of its harmful effects . Meanwhile , the Los Angeles County coroner 's office continues to investigate the cause of Jackson 's death on June 25 . It has been waiting on toxicology lab results , but a final autopsy report is expected as soon as this week , a coroner 's spokesman has said . CNN 's Ted Rowlands and Paul Vercammen contributed to this report .
NEW : Doctor was `` present during the search of his home , '' attorney says . Investigators search Dr. Jackson 's LAS VEGAS home , office . Rolodex allegedly gave Conrad Murray propofol in three hours before death , source says . Source close to family says doctor administered drug believed to have killed singer .