Two children were hospitalized after discovering narcotics at a playground adjacent to a preschool in Luleå, Sweden.

The incident prompted a police investigation, with officers seen removing several bags of unknown contents from the area of Mjölkudden in Luleå.

The narcotics were found in a bag on the playground, and according to police spokesperson Marie Andersson, the children had ingested some of the substances found.

They were taken to the hospital for observation but were later released the same evening.

An investigation is underway for endangerment, with no suspects currently identified.