Updated 1:43 p.m.

Rep. David Wu (D-Ore.) acknowledged questions surrounding a sexual encounter with a teenage woman are “very serious,” but would not elaborate on the matter.

“This is very serious, and I have absolutely no desire to bring unwanted publicity, attention or stress to a young woman and her family,” the Democrat said in a brief statement.

Wu’s statement came in response to a story posted Friday night by the Oregonian which, citing multiple sources, reported that “a distraught young woman” called Wu’s Portland office this spring, “accusing him of an unwanted sexual encounter.”

The newspaper wrote: “When confronted, Wu acknowledged a sexual encounter to his senior aides but insisted it was consensual, the sources said. The woman is the daughter of a longtime friend and campaign donor. She apparently did not contact police at the time.”