Whitney Houston's family free to collect body

Updated at 2:06 p.m. ET

LOS ANGELES - The family of late singer Whitney Houston is free to collect her body from the Los Angeles County Coroner's office, officials said early Monday morning, according to CBS Los Angeles.

"The family is making arrangements," Assistant Chief Coroner Ed Winter said Monday. "I don't know when the family is going to have her body picked up. But they are making arrangements and sometimes it takes a couple days."

An autopsy on the singer was completed Sunday; however the coroner is not officially saying what killed the six-time Grammy winner.

Beverly Hills Police Lt. Mark Rosen said that his agency may release more details Monday about Houston's death, but it will depend on whether detectives feel comfortable releasing any information.

Law enforcement sources told CBS News that while there were no illegal substances found in Houston's hotel room, there were prescription drugs. Authorities said the most likely theories for Houston's death are that she died of a heart attack or a prescription drug overdose, but no official determination has been made, CBS News correspondent John Blackstone reports.

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Half a dozen prescription drug bottles were found in Houston's hotel room, CBS station KCBS-TV reported Winter said.

Winter said the coroner's office didn't tell Houston's family that she died from a combination of the prescription drug Xanax, other prescription drugs and alcohol, the subject of a story that TMZ reported earlier Monday.

"I'm the one that talked with the family, and I didn't give that information," Winter told reporters.

Houston, 48, was found unresponsive Saturday afternoon by a member of her entourage in the bathtub of her fourth floor hotel room at the Beverly Hilton.

There have been conflicting reports about where Houston's body will be transported once it's released by the coroner with the destinations varying between Atlanta and New Jersey.

Detectives say Houston had been at the Beverly Hilton with a large entourage of family, friends and co-workers preparing for Clive Davis' annual pre-award show bash at the same hotel.

Paramedics tried to revive the singer, but she was pronounced dead at 3:55 p.m.

The Beverly Hills Police Department has issued a security hold barring the coroner's office from releasing details surrounding her death while toxicology tests continue.

However, the coroner's office has said that there were no signs of foul play.

"At this time her cause of death is deferred and we are finishing with all of our testing and it will be an ongoing investigation," Winter said.

Officials say it could take between six and eight weeks for toxicology findings to be returned.

The Los Angeles Times reported that police are interviewing family members to determine what Houston was doing Saturday hours before her death.

Houston's daughter, Bobbi Kristina Brown, 18, was rushed to Cedars Sinai Hospital Sunday where she was treated and released for anxiety and exhaustion, police said.

Houston's ex-husband, Bobby Brown, who was performing with New Edition in Mississippi when Houston died, issued a statement Sunday regarding her death.

"I am deeply saddened at the passing of my ex-wife, Whitney Houston," said Bobby Brown. "At this time, we ask for privacy, especially for my daughter, Bobbi Kristina. I appreciate all of the condolences that have been directed towards my family and I at this most difficult time."

The couple wed in 1992 and divorced in 2007 after a tumultuous marriage.

Funeral plans for the late singer have not been announced.

Fans have erected a make-shift memorial outside of the hotel, leaving notes, candles and flowers.

"It's very sad, she's gonna to be missed," said fan Shelia Johnson. "We all loved her so much."