The FBI and state police in Illinois are reviewing all evidence from a series of 1982 deaths dubbed “The Tylenol murders.”

Given the many recent advances in forensic technology, it was only natural that a second look be taken at the case and recovered evidence,” the FBI Chicago office said in a statement Thursday.

The FBI says the review was prompted by the recent anniversary of the killings and a bevy of new tips that have come in. No new physical evidence has emerged, and no charges have been filed.

James W. Lewis, of Cambridge, served 12 years in federal prison for trying to extort $1 million from Tylenol, but was never charged in the killings.

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