TRENTON, N.J. (AP) -

Police are investigating after they say a kindergarten student in New Jersey's capital city brought 30 packs of heroin to school.

Police were called to the International Academy of Trenton on Monday.

Police tell The Trentonian newspaper a teacher thought the 5-year-old was playing with a candy wrapper when she looked into his lunchbox and found 29 other packets of the drug.

The boy was taken to a hospital, where he tested negative for the opiates.

Police are trying to determine where the child got the drugs and no one has been charged.