Janusz Korczak’s orphanage in Warsaw, Poland. Photo: Jolanta Dyr via Wikimedia Commons.

An explosive device was thrown at a group of Israeli high school students on Wednesday while they were visiting a Holocaust-era site in the Polish capital of Warsaw.

No one was hurt in the incident, which took place as a 71-member delegation from the Ort School in Arad was touring Janusz Korczak’s orphanage.

The device was hurled at the group from a nearby building.

The security officer accompanying the students moved them away from the scene and notified local police of what had happened.

Following the incident, the group continued on with its trip as scheduled.