TOKYO (Kyodo) -- A Tokyo Stock Exchange official is suspected of abetting insider trading by leaking undisclosed information on multiple companies' stocks to a relative, sources close to the matter said Wednesday.

The man allegedly leaked information, including details related to a takeover bid, to his relative multiple times this year, while the relative is believed to have made profits of at least several hundred thousand yen by trading shares of the target companies, the sources said.

The man is employed in a department responsible for handling corporate disclosures. He did not trade the relevant stocks himself, according to the sources.

Last month, the Securities and Exchange Surveillance Commission raided related locations, including the homes of the official and the relative, according to the sources. The securities watchdog will proceed with an investigation and determine whether to file a criminal complaint with prosecutors.

Japan Exchange Group Inc., the parent of TSE, said in a statement that its employee has been investigated by the SESC and it will "fully cooperate with the investigation."

The case follows the revelation last week by other sources that a judge in his 30s temporarily assigned to work at the Financial Services Agency is under investigation by the SESC on suspicion of repeatedly engaging in insider trading this year.

The TSE is Japan's largest securities exchange, with over 4,000 listed companies.