TOKYO (Reuters) – Shares of Japan’s Hino Motors, Toyota Motor Corp’s truck and bus unit, were down more than 4% and the top loser on the Nikkei index on Tuesday, after its engine-related misconduct widened to small trucks.

Hino President Satoshi Ogiso said on Monday that during a transport ministry investigation additional misconduct regarding emissions was found that affects more than 76,000 vehicles.

Toyota shares fell 1.4% on Tuesday morning.

(Reporting by Satoshi Sugiyama; Editing by Tom Hogue)