A furious fire killed three workers on the spot at a factory in the northern Vietnamese province of Bac Ninh on Friday night.

The blaze broke out and spread over an area of nearly 1,000 square meters at the second floor of the factory of Dreamtech Vietnam Co., Ltd at the VSIP Industrial Park in Tien Du District at around 11:00 pm on the same night.

Firefighters immediately arrived at the site upon the report of the case but found it difficult to access to the affected area. They needed about one hour to put the fire under control.

Three workers -- 28-year-old D.T.T.H. from the same province, 32-year-old M.V.K. from Tuyen Quang Province and 31-year-old N.V.T. from Thai Binh Province -- were found dead at the scene.

Authorities are investigating the cause of the incident and calculating damages.