Dan K. Webb, special prosecutor in the David Koschman case. | Sun-Times file photo
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Updated: March 2, 2014 9:39PM
Dan K. Webb — the special prosecutor who said he was unable to charge Chicago police officers with breaking any state law for botching an investigation into a nephew of former Mayor Richard M. Daley — turned over all of his evidence to the FBI last June, the Chicago Sun-Times has learned.