Muslim schoolchildren were targeted in an early-morning attack in Brisbane, Australia, on Wednesday, when a bag featuring a swastika and containing a severed pig's head was left at a school's front gate.
Islamic College of Brisbane staff removed the bag before students arrived at the school in outer suburb Karawatha, acting school chairman Ali Kadri said, but staff and students had been left shaken.
"They're worried because, while it's a minor thing, there are really young kids who go to that school, because it goes from Prep to year 12," he said.
"It's about the safety of the kids. If somebody's going to do this, given the climate, anything else could happen as well.
Prominent identity Yassmin Abdel-Magied, a former student of the school, took to Twitter to speak of her disgust at the attack on the college in which she spent her primary education.
"How is a parent supposed to explain to a kid why people hate them?" she said.
Mr Kadri said some young males in a Subaru WRX were caught on school cameras and that footage, which included a partial numberplate, had been passed on to police.