Police find `` homemade explosive '' near site of upcoming papal visit . The bomb was found in a car parked on the street next to St Peter's Square and police are investigating whether it is linked to last week's attack at an Ariana Grande concert that killed 22 people. Francis landed in Brazil for World Youth Day on Monday .
Police find `` homemade explosive '' near site of upcoming papal visit . The device was destroyed `` without any further risk , '' police said . Francis landed in Brazil for World Youth Day on Monday .