CHICAGO, Illinois (CNN) - Illinois Gov. Rod Blagojevich is expected Tuesday to name former Illinois Atty. Gen. Roland Burris to replace President-elect Barack Obama in the U.S. Senate, CNN affiliates the Chicago Tribune and WLS TV reported, citing sources familiar with the decision.
Blagojevich, who has been the target of an ongoing federal investigation, is to announce his choice at a news conference at 2 p.m. local time.
FBI agents arrested Blagojevich on December 9 after federal prosecutors alleged, among other things, that he had tried to "sell" Obama's former Senate seat. Blagojevich denies any wrongdoing.
Burris does not have to be formally approved by the Senate to be appointed by Blagojevich. But the Senate could refuse to seat Burris or seat him and investigate the manner in which he was appointed, and unseat him if they discover any wrongdoing.
Senate Majority Leader Harry Reid, D-Nevada, has threatened not to seat anyone the governor appoints, and has called for the Illinois Democrat to step down.
(updated 1:10 p.m. with additoinal information)