The managers said that on November 17 and 18 the  perpetrators used chainsaws to cut down the trees, whose scientific name is  Burretiodendron hsienmu. The trees weighed a total of 40 cubic  metres.
Deputy chairman of the provincial People's Committee Nong Van Chi  inspected the scene yesterday, along with representatives from the local Forest  Management Department, police and district people's committee.
Some parts  of the trees were discovered separated into blocks, but had not been transported  out of the park.
The initial investigation showed that the culprits are  local residents who have joined forces with wood traffickers to cut down the  trees.
The Bac Kan Police, in co-ordination with the forest managers, are  researching the transportation methods used to remove the chopped  wood.
The provincial authorities condemned the incident as serious  deforestation. On Wednesday, provincial party committee secretary Nguyen Xuan  Cuong chaired an urgent meeting to define the reasons behind the destruction and  to outline the responsibility of relevant agencies. Measures were also discussed  to prevent further illegal deforestation in the national park.  
(VietNamNet/VNS)