A judge has denied a request by Michael Jackson's lawyers to force the child accusing him of abuse to undergo psychiatric tests.
Michael Jackson has denied 10 child abuse charges
Defence lawyers said they needed to conduct their own mental evaluations of Jackson's accuser and his family ahead of his child abuse trial in January.
But Santa Barbara Superior Court judge Rodney Melville denied the request at a pre-trial hearing on Monday.
Singer Mr Jackson, 46, has pleaded not guilty to 10 child abuse charges.
The defence team said it needed to conduct tests on the accuser, his brother and mother in order to effectively cross-examine a psychiatrist who interviewed them before the charges were brought.
But Judge Melville said he would hear no argument on the issue.
Mr Jackson's lawyers also asked to see medical, psychiatric, military, employment and banking records for members of the accuser's family.
Prosecutors said some of the information was privileged and should be reviewed by the court before it was released.
"You are simply not entitled to the gynaecological records of the victim's sister," deputy district attorney Ron Zonen said, claiming it would be tantamount to harassment.
Judge Melville said the defence team could seek the records, but ordered them to notify the person whose records were at issue. That person would then have five days to challenge the subpoena.
"I want to protect Mr Jackson's right to set up his defence... but I also think we also have got to protect the people whose records are being subpoenaed," Judge Melville said.
Mr Jackson's trial is due to begin on 31 January.