What key details about death of mark chua can be extracted from the following bio? Bio: mark welson chua -lrb- died sometime between 15 -- 18 march 2001 -rrb- was a filipino student of the university of santo tomas whose death is widely believed to be linked to his expose of alleged irregularities in the reserve officers ' training corps unit of the university . his death became the catalyst for the passage of republic act 9163 or the '' national service training program law '' , which removed completion of mandatory rotc as a precondition for graduation for male college students in the philippines .
A:
- convicted is arnulfo to life imprisonment eduardo tabrilla sentenced to 6-14 years imprisonment aparri paul joseph tan and michael von rainard manangbao remain at , large ; issued arrest warrants by court jr. sentenced to death ; commuted- place is manila , philippines- title is death of mark welson chua- accused is arnulfo michael von rainard manangbao aparri , jr. eduardo tabrilla paul joseph tan- caption is arnulfo aparri , one of the principal suspects .- verdict is four accused found guilty- burial is cavite , philippines- image is 150px- inquiries is inquiry led by the national bureau of investigation- date is 2001 03 18- cause is death from suffocation