Los Angeles Assistant Chief Coroner Ed Winter personally went to Dr. Arnold Klein’s office to get Michael Jackson’s medical records this afternoon, TMZ reports.

He went to the office because Dr. Klein was not fully cooperating with the L.A. Coroner’s office request for documents pertaining to Klein’s treatment of Jackson.

On July 2, Winter’s office contacted the office of Dr. Klein and subpoenaed the medical records of Michael Jackson. At that time, Klein’s lawyer sent partial records and then promised he would send the rest later, but never did.

Winter’s office then called Dr. Arnold Klein’s rep to say they still hadn’t received the documents but Klein never responded. Thus the personal trip today.

According to Winter, a lawyer for Klein was in the office while another was on the telephone. The lawyers promised to hand over the files in 24 hours.

Law enforcement is investigating Dr. Klein’s prescription practices as they relate to Michael Jackson – including prescribing him medication using aliases.

If he is found to have withheld, altered or destroyed medical records of the singer, it could lead to additional scrutiny of the well-known dermatologist.

There have also been reports that Klein is the biological father of Michael’s kids Paris and Prince. He denies that he is … to the best of his knowledge.

Learn more at http://www.thehollywoodgossip.com