TOKYO (Reuters) -Shares in struggling Japanese automaker Nissan Motor plunged 6.5% on Tuesday morning after its second-largest shareholder, Mercedes-Benz, said it would sell its 3.8% stake on Monday.

Nissan's share price fell to around 339 yen ($2.30) per share in morning trading compared to a closing price of 363 yen per share on Monday.

($1 = 147.3300 yen)