Updated

Prosecutors investigating former Sen. John Edwards are taking another look at the man who posed as the father of Edwards' out-of-wedlock baby while he pursued the White House.

The Associated Press spotted Andrew Young leaving his attorney's Washington office after prosecutors interviewed him for more than four hours Thursday. The timing suggests they are weighing the strength of their chief witness before deciding whether to indict the two-time presidential candidate.

Their investigation centers on payments made by two top Edwards donors to keep Young and Edwards' mistress, Reille Hunter, in hiding during the 2008 campaign.

Young's attorney, David Geneson, did not return a call for comment on the meeting, and the Justice Department declined to comment. But a person familiar with the investigation said Justice Department officials requested the meeting.