Police are investigating how a "partially smoked pot cigarette" ended up in the backpack of a four year-old at a New York state elementary school.

WGRZ is reporting that Niagara Falls School Superintendent Mark Laurrie said the incident happened Wednesday morning at Cataract Elementary School. An aide was helping the student go through their bag when the small amount of pot was found.

The Superintendent said that police say the packaging of the weed leads them to believe the suspected drug came from Canada. Police say the child is not in danger, and was sent home.

An investigation will continue, Child Protective Services was also notified, according to police.

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