The attempted attack was one of several planned by Iran, spiking in recent months and years.
The national bomb squad is on its way to investigate the object, the spokesperson said.
Hungary's approval is also needed for Sweden to join NATO
The White House has reportedly agreed to Turkey's demand, and Sweden communicated that it would no longer give refuge to members of the PKK, the separatist Kurdish Workers Party.
Johan Floderus was detained in April 2022 while on holiday in Iran. Sweden’s foreign minister said on Saturday that his trial had begun.
The issue garnered attention in the region after a planned Torah burning was approved by Sweden before being scrapped by the organizers, whose goal to ban the burning of all holy books.
During a moment of silence for Palestinian victims in a Malmö, Sweden classroom, students began making violent antisemitic statements.
Mira Kelber, chairperson of Jewish Youth in Malmo, highlighted the fear among students, saying, "Many young people are afraid. They don't dare stand up and speak."
The group also tackled the issue of conflating criticism of Israel with antisemitism, claiming that "criticism of the state of Israel is not the same as antisemitism."
The incident comes after a 'river to the sea' banner was raised at another film festival there.