Prosecutors on Friday reportedly questioned Livedoor Co.'s chief financial officer, Ryoji Miyauchi, director Fumito Kumagai and another executive over alleged violations of the Securities and Exchange Law, sources said.

Investigators questioned them on a voluntary basis in the latest development of the probe into whether Livedoor misled the stock market in 2004 over one of its many merger-and-acquisition deals in order to boost the share price of an advertising subsidiary, Livedoor Marketing Co., then known as ValueClick Japan Inc., the sources said.

They were also questioned about allegations that Livedoor falsified its financial report for the year through September 2004 to make it appear that it had a profit of 1.4 billion yen when it was in fact in the red, the sources said.