With her public support numbers in free-fall, South Korean President Park Geun-hye on Friday offered yet another apology for the political crisis engulfing her administration, adding that she would accept an investigation of her role in an alleged influence-peddling scandal "if necessary."

"Anyone found by the current investigation to have done something wrong must be held responsible for what they have done, and I am also ready to face any responsibility," Park was quoted as saying during a nationally televised news conference.

"If necessary, I'm determined to let prosecutors investigate me and accept an investigation by an independent counsel, too," she said.