Investigators of the Defense Security Command raided a defense-related office of Hanwha Corp. in central Seoul on Friday as part of a probe into an employee suspected of leaking military secrets.

Defense authorities said the raid and search were related to a violation of the Military Secret Protection Act, and that investigators confiscated computer files and other documents to glean evidence for the case. They refused to elaborate further on the investigation.

Observers raised the possibility that the probe could be in connection to an accidental grenade blast at a boot camp in Daegu last Friday that killed one army recruit. Hanwha is a supplier of hand grenades. But military officials said the probe had nothing to do with the accident.

By Song Sang-ho(sshluck@heraldcorp.com)