Its deputy general director Vu Khan Tu has been suspended for 15 days while he clarifies his role in a $400,000 embezzlement case, the Nguoi Lao Dong newspaper reported.
Police later detained Tu after searching his office and home. The detention will last four months.
The move follows the arrest of three executives at subsidiary Quang Ninh Port Company (QNPC).
QNPC deputy chief Dinh Ngoc Uyen, the company's chief account and a cashier were held on suspicion of misappropriating funds by submitting forged invoices between late 2011 and the end of 2012.
Tu
