|St. Peter's Basilica. (Photo Credit: Lisa Cancade Hackett)|
Authorities said suspect Abderrahim Moutahrrick reportedly received a WhatsApp message from ISIS-held territory that read: "Dear brother Abderrahim, I send you… the bomb poem… listen to the sheik and strike," potentially referring ISIS leader Abu Bakr al-Baghdadi. Moutahrrick was identified as Moroccan-born but residing in Italy at the time.