Update 9:35AM EST:
"Blagojevich was taken into custody hours after the Tribune reported that the investigation into allegations of pay-to-play politics within his administration had been expanded to include his pending choice of a Senate replacement for Obama. The Democratic governor has said he expects to make a decision on the state's next senator in weeks."
"A source said today that Gov. Rod Blagojevich was taken into federal custody at his North Side home this morning. The U.S. attorney's office would not confirm the information.
A Blagojevich spokesman said he was unaware of the development. "Haven't heard anything -- you are first to call," Lucio Guerrero said in an e-mail."