George Zimmerman

Prosecutors handling the second-degree murder case against George Zimmerman filed a motion late Wednesday asking the judge to seal parts of the evidence.

Among the items Duval County Assistant State Attorney Bernardo de la Rionda wants kept from the public: the results of a test police conducted on Zimmerman the day after he killed Trayvon Martin. The results have already been provided to the court under seal, de la Rionda said.

“Any testing performed and findings in this case have not gained such reliability and scientific recognition as to warrant its admissibility,” he wrote.

De la Rionda did not specify what the test was, but in an interview last week Zimmerman’s father told The Miami Herald that his son had passed a “voice stress test.”

“It’s like a lie detector, but more reliable,” Robert Zimmerman said. “I told him, ‘If you are comfortable and have been truthful, go and do it. If at any time you are uncomfortable, just say: ‘Am I afree to leave?’ So he did it.”

De la Rionda also wants to seal two CDs of audio interviews with a witness identified as “W9.” She is the same person who called police anonymously just two days after the killing to say Zimmerman and his family were racists.