LOS ANGELES (October 28, 2009)--A witness testified Wednesday that a doctor accused of conspiracy in Anna Nicole Smith's treatment with drugs kept a hidden stash of medical records on her in his home closet.

In unexpected testimony, Jon Genens, an investigator for the state medical board, said Wednesday a search warrant also uncovered files that were kept at the office of Dr. Sandeep Kapoor's attorney.

Genens said the two sets of files were for the same dates, but contained slightly different information.

Judge Robert J. Perry says the secreting of information at the house could be interpreted as "guilty knowledge," but he did not elaborate during the preliminary hearing.

Kapoor and two other defendants are charged with illegally funneling prescription drugs to Smith.

All have pleaded not guilty.

Earlier Wednesday, an expert witness withdrew testimony about one of Smith's doctors massively increasing her methadone doses.

Dr. James Gagne, testifying for the prosecution on Wednesday in Los Angeles, said he misunderstood records kept by Dr. Sandeep Kapoor.

Gagne said he now believes the methadone prescriptions were not a major issue in the case.

However, the witness stood by earlier testimony that Kapoor gave Smith excessive dosages of opiates and sedatives.

Kapoor is another of the three defendants charged with illegally funneling drugs to Smith.