Pretoria, South Africa (CNN) -- Oscar Pistorius spoke to a friend of Reeva Steenkamp's in a "very sinister tone" Tuesday, asking her: "How can you sleep at night?" the friend's lawyer said. Kim Myers found the "unwelcome approach ... extremely disturbing," lawyer Ian Levitt said, adding that the incident had been reported to the National Prosecuting Authority. The athlete's spokeswoman did not immediately respond to a CNN request for comment. The National Prosecuting Authority confirmed that it had received a report about the alleged incident but said it was legally powerless. "In law we cannot get involved. The Myers family lawyer that made the report was advised to deal with the matter as they deem fit," said authority spokesman Nathi Mncube.
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NEW: Kim Myers says Pistorius spoke to her in a "very sinister tone"
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Defense witnesses did not hear the same things prosecution witnesses did
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The defense is planning to wrap up next week
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Pistorius says he mistook his girlfriend for an intruder in the middle of the night
Five @placeholder neighbors testified for the prosecution, and five have now testified for the defense.