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Police said a 68-year-old man may have saved someone's life after he turned in a "big box of blood" he'd found in the middle of a busy Madison, Wisconsin, road.

The box was undamaged and 'good to go' when it arrived at its intended location, the local Red Cross, Madison police say. Madison Police Department

It was human blood, and it was supposed to have been delivered Sunday to the local office of the American Red Cross, said Joel Despain, a spokesman for the Madison police. The Red Cross soon confirmed that it had received only five boxes of a six-box shipment.

"It was Forrest Gump who said: 'Life is like a box of chocolates. You never know what you're gonna get,'" Despain said.

The box was found by an unidentified 68-year-old man from the suburb of Stoughton, Despain said. Actually, the man couldn't have avoided it, seeing as how it was "smack-dab in the middle of Zeier Road" blocking his path, Despain said.

The man put the box — clearly labeled HUMAN BLOOD — in his car and flagged down a passing cop, who made some phone calls and learned that the box was donated blood meant for the Red Cross' Sheboygan Avenue location.

The box somehow hadn't been run over or damaged in the street, and when it arrived at the Red Cross, it was "good to go," Despain said.