Three French schools received fake bomb warnings on Thursday, the education ministry said, following similar hoax threats in Britain, Ireland and Italy. The ministry reported “three bomb alerts this morning in three school districts” but gave no further details.

According to local media, the incidents occurred in the southern city of Marseille, in the eastern Jura region and in the town of Laon in the northeast, and led to evacuations. The threats come after dozens of Italian schools received false bomb threats by email on Wednesday, which led to some schools being evacuated, while schools in the UK and Ireland also received similar threats.S1

The French hoaxes follow a wave of fake bomb threats that hit flights across Europe, forcing planes to be diverted to countries including France. Asked about the threats on Thursday, French President Emmanuel Macron said it was “too early to say” whether a foreign power was involved, adding that “we do not have sufficient evidence to be able to attribute responsibility” and that “we cannot say that any external powers are behind these calls.” He made the remarks to press gathered in Dublin.S1

Separately, French cybercrime investigators believe Iran was behind the hacking of numerous fridges at French supermarkets, which led to millions of euros of products being discarded after fridges and freezers were set to defrost mode.S1