The pressure keeps building on Dr. Conrad Murray, the former private physician to Michael Jackson at the time of his death.

After his Houston office and storage unit were searched, and law enforcement officials announced that they believe Murray administered the lethal dose of propofol to Jackson, his Las Vegas home was raided by Federal agents.

Murray's lawyer released a statement yesterday, according to a TMZ report. The statement reads: "We can verify that at approximately 8am, Officers from DEA, LAPD and various local agencies began executing a search warrant at Dr. Conrad Murray's Las Vegas home and office. The search warrant authorized investigators to look for medical records relating to Michael Jackson and all of his reported aliases. Dr Murray was present during the search of his home and assisted the officers. Investigators left Dr. Murray's home around 12 noon, seizing cell phones and a computer hard drive."

Reportedly, police may expand their investigation to include more than a dozen doctors who possibly employed fraudulent prescription practices in treating Michael Jackson. LAPD officials are gathering information and evidence on various doctors who may have helped Jackson procure excessive medication, TMZ reports.

The LA Times reports that officers are also seeking information on medical records for the 19 pseudonyms Jackson apparently used. The LAPD and FDA were authorized to seize prescriptions, files, billing information, tests results, electronic records and other material kept under aliases, including Omar Arnold, Paul Farance, Bryan Singleton, Jimmy Nicholas, Blanca Nicholas, Roselyn Muhammad, Faheem Muhammad, Frank Tyson, Fernand Diaz, Peter Madonie, Josephine Baker and Kai Chase. One reported alias listed in the warrant was Jackson's son Prince.