SAVE MONEY ON TRAVEL DEALS

Two officials confirmed the DEA's participation, saying agents would examine several of Jackson's doctors, their medical practices and their possible sources of drugs, CNN reported Thursday.

A DEA spokeswoman referred questions to the Los Angeles Police Department, which would not confirm the federal agency's involvement.

"We routinely offer assistance to any agency regarding the Federal Controlled Substance Act", DEA spokeswoman Sarah Pullen said. "However, at this time, we have nothing further to comment about the death of Michael Jackson."

Speculation about possible drug abuse has surrounded the investigation since Jackson, 50, died last Thursday. The cause of his death was pending toxicology results, the coroner's office said.

Police Wednesday released a car belonging to Dr. Conrad Murray, Jackson's cardiologist. Murray's lawyers issued a statement, asking the public to reserve judgment about the cause of death until tests were complete.

"Based on our agreement with Los Angeles investigators, we are waiting on real information to come from viable sources like the Los Angeles medical examiner's office about the death of Michael Jackson", the

statement said. "We will not be responding to rumors and innuendo."

The lawyer's statement was in reaction to a claim to CNN by a nutritionist who said Jackson suffered from insomnia and asked for the powerful sedative, Propofol, despite knowing its dangerous side effects.

 BREAKING STORIES

Disney starts sports visualization project

Jillian Michaels' show set for June debut

'Kid' to premiere at Va. elementary school

David: Good chance for Season 8 of 'Curb'

Arrest made in Haim-linked drug ring

'Battle' is No. 1 on the U.S. album chart

Bullock cancels premiere amid cheat buzz

Weaver to star in horror-comedy 'Vamps'

Poehler pregnant with second child

Osmonds cancel more Vegas dates

Oldest temple in the world found in Turkey

Vidal Sassoon film to screen at Tribeca

'Bachelor' star Jake denies ex's claims

Date set for Oprah defamation trial

Canalis lands guest gig on 'Leverage'

'New Moon' wins ShoWest fan choice prize

Segel to co-star in next Muppets movie

Charles developing new comedy series

Snoop Dogg reads 'Late Show' Top 10 list

Feldman bids goodbye to Haim on blog