He came into the office and gave his resignation verbally, Cooper told the Daily Journal in Franklin, Ind. The resignation was announced after the Center's initial story was published.

Email headers with detailed IP addresses suggested that the message was sent from Indianapolis.

Lam, an Indianapolis resident, at first told the Center he never wrote it.

Reached Tuesday by phone at the number listed on the email, Lam confirmed his email address matched the Hotmail address appearing on the Walker email, but said he had never written to Walker.

"I am flabbergasted and would never advocate for something like this, and would like everyone to be sure that that's just not me," he said, after being read the email.

Indiana deputy prosecutor Carlos Lam confirms this email appears to be from his email address, but he denies sending it. Click to see a larger version in a new page.

Asked his views on Scott Walker, Lam said, "I think he's trying to do what he has to do to get his budget balanced. But jeez, that's taking it a little bit to the extreme," he said of the email's suggestion to fake violence. "Jeez!"

He said he was minivan-shopping with his family when the email was sent.