WASILLA, Alaska -- Alaska Gov. Sarah Palin, the former Republican vice presidential nominee, abruptly announced Friday she is resigning from office at the end of the month, a shocking move that rattled the Republican party but left open the possibility she would seek a run for the White House in 2012.

Palin, 45, and her staff kept her future plans shrouded in mystery, and it was unclear if the controversial hockey mom would quietly return to private life or begin laying the foundation for a presidential bid.

Palin's spokesman, David Murrow, said the governor didn't say anything to him about this being her "political finale." He said he interpreted Palin's comment about working outside government as reflecting her current job only.

"She's looking forward to serving the public outside the governor's chair," he said.

And Pam Pryor, a spokeswoman for Palin's political action committee SarahPAC, said the group continues to accept donations on its Web site, with an uptick in funds after Palin's announcement.

In a hastily arranged news conference at her home in suburban Wasilla, Palin said she will formally step down July 26, and Lt. Gov. Sean Parnell will be inaugurated at the governor's picnic in Fairbanks. She said she had decided against running for re-election as Alaska's governor, and believed it was best to leave office even though she had two years left to her term.

"Many just accept that lame duck status, and they hit that road. They draw a paycheck. They kind of milk it. And I'm not going to put Alaskans through that," she said. (AP)