This paper reports on the first findings of genetically modified maize in c
onventional seed maize in 1999. In a few number of seed maize samples conta
minations of transgenic maize, especially the event Mon 810, were detectabl
e. The concentrations of transgenic maize in the positive samples were lowe
r than 0.5%. The problem of interpretation of the findings from the view of
seed and genetic law is discussed.