Japan's antitrust watchdog on Monday pressed Google LLC to reform its business practices after finding that it imposed unfair restrictions in its search advertising agreement with Yahoo Japan.

The Japan Fair Trade Commission believes the practices by the U.S. search giant could further undermine competition in the advertising market, sources familiar with the case said earlier.

Yahoo Japan, now LY Corp., has said it had no choice but to accept Google's restrictions because it receives ad distribution technology from Google, according to the sources.

==Kyodo

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