The KFTC stepped in after complaints from NHN Corp and Daum Communications Corp, South Korean search engine services. Both claimed Google is engaging in anti-competitive practices with Android by pre-installing Google software in the OS.
Additionally, the companies say Android is "systematically designed" to make switching to a different engine difficult.
Google quickly responded to the news:
We will work with the KFTC to address any questions they may have about our business. Android is an open platform, and carrier and OEM partners are free to decide which applications and services to include on their Android phones. We do not require carriers or manufacturers to include Google Search or Google applications on Android-powered devices.