TRENTON, NJ (CBS) –  Police say a kindergartner in Trenton was found with nearly 30 packets of heroin in a lunch box.

Trenton Police say it is an active investigation and they are trying to figure out how the five-year-old ended up with the packets.

READ MORE: Philadelphia Students Finding Comfort In Rec Centers Again Amid Gun Violence Epidemic

They don’t believe any children ingested the drugs.

Authorities say on Monday they were called to the International Academy of Trenton Charter School for a report of recovered drugs.

The teacher said the five-year-old was playing with what looked like a candy wrapper, took a closer look and found it was some kind of drug in a folded wax paper.

The teacher looked in the student’s lunchbox and found 29 more packets of what police say is heroin.

READ MORE: 'I Thought I Was Done': Residents Of Trevose Mobile Home Park Pick Up The Pieces After EF-3 Tornado

The child was taken to the hospital and tested, but no drugs were found in the child’s system.

Police say they are working with Child Protective Services as they investigate who put the drugs in the lunchbox.

No arrests have been made.

The charter school has not released any information, but says they will put out a release sometime today.

MORE NEWS: Pirates' Crowe, 2 Relievers 1-Hit Phillies, End 4-Game Skid