The man lived during the Phung Nguyen period, Xinhua cited state-run VNA news agency as saying.
The remains -- believed to be of a 1.6-metre-tall man -- were found at the Dong Dau relic site in the northern province of Vinh Phuc, 40 km from the capital city of Hanoi.
The Phung Nguyen period in Vietnam was a culture during the early Bronze Age, some 4,000-3,500 years ago. The name Phung Nguyen was derived from an archaeological site in Phung Nguyen village, the first place where relics were found in northwestern Phu Tho province, 50 km from Hanoi.
Many other artefacts like stone axes, graters, bronze arrows, ceramics and jewellery made of stone, animal horns and bones were also found.
The Dong Dau site is one of the largest excavation sites in the country, where numerous artefacts have been found.
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Archaeologists believe the eastern part of the site was the living place in the Phung Nguyen period while most of the tombs were found in the southwestern area.