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Giants cornerback D.J. Johnson isn't buying the police version that friend and former teammate Kenny McKinley committed suicide this week.

Johnson, a second-year backup who spent time with McKinley on the Broncos' practice squad last season, outlined a murky conspiracy theory yesterday when asked about McKinley's death.

"Something fishy went down there," Johnson said without providing any details. "I don't think it happened the way they're saying it happened. Somebody did something to him."

Police in Arapahoe County, Colo., said McKinley died of a self-inflicted gunshot wound to the head Monday night. Officials there added that McKinley, a wide receiver, had been depressed after undergoing season-ending knee surgery last month.

Johnson told The Post he thinks McKinley might have been murdered because of what he described as a dangerous climate for pro athletes in Denver, especially high-profile Broncos.

Click here for more on this story from the New York Post.