A nurse-nutritionist who worked with Michael Jackson said she was interviewed by Los Angeles homicide detectives who told her that needle marks were found on the pop singer's body.

Cherilyn Lee said Tuesday that she told the detectives that she didn't see any so-called "track marks" on Jackson's arms when she provided vitamins and other supplements earlier this year.

Lee also was asked by the detectives Friday if she saw bruising on Jackson. Lee said she didn't but told police that Jackson's veins made placing an IV needle difficult, which could result in bruising.

Lee has said that Jackson asked her for a powerful anesthetic to alleviate his insomnia. She said she refused to help him get access to the drug, which was found in his home.

Jackson's Dermatologist Subpoenaed

A Los Angeles coroner's official has visited the office of Michael Jackson's dermatologist to serve a subpoena seeking additional medical records.

Assistant Chief Coroner Ed Winter went to Arnold Klein's Beverly Hills office around midday Tuesday.

Speaking to a throng of reporters outside the office, he said Klein had been cooperating in the investigation. Craig Harvey, the coroner's chief of operations, says it's the second time coroner's investigators have served Klein a subpoena.

They are focusing on the role drugs played in causing Jackson's death.

Klein has recently given TV interviews saying he sedated Jackson for medical procedures. He denied ever giving the pop star an unnecessary dose of drugs.