The company said it would make an announcement at 0630 GMT, without providing further details.

Kobe Steel falsified data on product quality and specifications longer than the 10 years it had previously stated, a source with knowledge of the matter told Reuters.

The cheating crisis engulfing Japan's No.3 steelmaker is deepening with the company saying about 500 companies have received its falsely certified products.

(Reporting by Sam Nussey; Editing by Himani Sarkar)