Federal drug agents searched the Houston clinic of Michael Jackson’s doctor on Wednesday, according to a news report, even as investigators in California sought more information from the man.
A television channel reported that officials with the Drug Enforcement Administration were at Dr Conrad Murray’s clinic in north Houston.
Video footage showed two Houston police officers guarding the door.
Murray was Michael Jackson’s personal physician, and was with Jackson when he died.
Murray, who is based in Las Vegas and is licensed in California, Nevada and Texas, has been interviewed by police but he has not been considered a suspect in the singer’s death.
Meanwhile, investigators in California are also seeking more information from Murray, according to his attorney, Edward Chernoff.
The attorney posted a statement on his law firm’s website late on Tuesday saying investigators from the Los Angeles County coroner’s office have asked for medical records in addition to those already provided by Murray.
“The coroner wants to clear up the cause of death; we share that goal”, Chernoff said in his statement.