Continuing coverage of the carbon monoxide poisoning of four people in McFarland last week.

The McFarland Police Department admits it made a mistake, it cost the department 10 hours of valuable rescue time.

That's because they went to the wrong address three times before arriving at the scene.

A contractor died as a result of carbon monoxide poisoning at a home in the Village of McFarland.

Officials say he was probably dead before the police even got the call he was missing.

Three family members survived, but were found in serious condition.

Law enforcement officials say this was a rare case, as most emergency calls go through the Dane County Communications Center.

With that as a resource and grid maps, a street atlas and a current Hill?Donnelly resource book, officers say they have many ways to cross reference before making an address determination.

"Typically you have a name of a homeowner, or a partial address or you have it come in as an emergency call from someone on scene of the emergency which also helps you to track them," says Verona Police Chief Bernard Coughlin.

NBC 15 spoke with a lieutenant from the McFarland police department.

He says the department have gotten rid of the old directory to prevent further problems.

He also says they don't expect a lawsuit, in fact the family says they are just glad the police arrived when they did.