Colonel Vo Tuan Dung, a senior officer at a Vietnamese police department in charge of high-tech crimes was found dead in his office on Friday, according to state media reports.
Initial indications are that he hanged himself in his office, although investigations are continuing.
Colonel Dung was the deputy head of the technical department, whose former head, Nguyen Thanh Hoa, was arrested in March on suspicion of involvement in a massive illegal online gambling ring (see previous reports).
Authorities in April also arrested Lieutenant General Phan Van Vinh, the former chief of the General Department of Police, whom police said was suspected of involvement in the ring.