Reporting from Washington -- A day after Alaska Gov. Sarah Palin resigned, a federal official in her home state dismissed one potential explanation for her sudden and unexpected resignation: a rumored FBI investigation into the former Wasilla mayor on public corruption charges.

Despite rumors of a looming controversy after the Republican governor's surprise announcement Friday that she would leave office this month, some of them published in the blogosphere, the FBI's Alaska spokesman said the bureau had no investigation into Palin for her activities as governor, as mayor or in any other capacity.

"There is absolutely no truth to those rumors that we're investigating her or getting ready to indict her," Special Agent Eric Gonzalez said in a phone interview Saturday. "It's just not true." He added that there was "no wiggle room" in his comments for any kind of inquiry.