7:52pm: According to Ladson, the Nationals were shocked by Bowden's resignation. Manager Manny Acta and several players made complimentary remarks Sunday evening.
"The news caught me by surprise," Acta said. "It takes a lot of courage for him to do that. As a manager, I appreciate what he did if he felt that he was being a distraction here. I will always be grateful and have a soft spot for Jim."
9:48am: The Washington Post has provided a link to Bowden's official statement.
9:04am: According to Chico Harlan of the Washington Post, Nationals GM Jim Bowden has resigned.
ESPN.com has more, including quotes from Bowden. Most notably, Bowden says, "I've become a distraction," and, "my ability to properly represent the Washington Nationals has been compromised."
Finally, Bill Ladson of MLB.com captures a classic quote from the GM: "I have become a distraction. Unless you are Manny Ramirez, there is no place for distraction in baseball."