Two days after his ex-wife and her friend were slashed to death, O.J. Simpson took a surprise lie-detector test while on medication and scored badly on it, KCBS-TV reported.

The report did not cover what questions Simpson was asked, but said he scored lower than a minus 6, which is considered deceptive.The station reported that Simpson and longtime friend Robert Kardashian drove to polygraph examiner Edward I. Gelb's office on June 14, 1994, at the urging of defense lawyer Robert Shapiro.

Simpson believed he was going for medical tests and was angered when Shapiro arrived and told him about the test, KCBS said.

Simpson agreed to take the test, however, and when he scored badly he offered to take another, KCBS said. He was advised not to, partly because he was on medication, the TV station reported.

A jury acquitted Simpson of murder last October.

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Shapiro did not immediately return a call to his office for comment. Gelb refused to confirm or deny giving the test.

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