Chief Medical Examiner Dr. Joshua Perper, right, talks to the media about results of an autopsy on Anna Nicole Smith on Friday at the Broward County Medical Examiner's Office in Dania Beach, Fla.. Smith died after collapsing at her hotel Thursday.

Dania Beach, Fla. ? Prescription drugs were found in Anna Nicole Smith’s hotel room, but there were no pills in her stomach, and investigators said Friday they are awaiting tests that could tell whether the former centerfold died of an overdose, as some close to her suspect.

At the same time, a judge in Los Angeles ordered that the model’s body be preserved for at least 10 days for a possible DNA test related to a paternity dispute. The ruling could interfere with plans for a funeral.

Dr. Joshua Perper, the Broward County medical examiner who did the autopsy, said no illegal drugs were discovered in Smith’s room at the Seminole Hard Rock Hotel and Casino in Hollywood after the 39-year-old pinup collapsed there Thursday. He would not identify the prescription drugs.

But CNN quoted an unidentified law enforcement source as saying there were large amounts of prescription drugs, including Valium and antibiotics, as well as over-the-counter cold and flu medication.

Perper said that although toxicology tests are pending, the autopsy found no immediate evidence, either in Smith’s stomach or her bloodstream, that she had taken large amounts of prescription medication. But officials “do not exclude any kind of contribution of medication to the death,” he added.

He said it would take three to five weeks to conclude the investigation. Authorities also planned to interview a nurse and others and examine medical records before settling on a cause of death.

Seminole Police Chief Charlie Tiger said there was no indication the voluptuous blonde was the victim of a crime, and Perper said the autopsy was able to exclude any kind of physical injury such as blows to the body or asphyxiation.

“There are a number of possibilities” as to the cause of death, Perper said, including natural causes, a drug reaction or some combination of the two.