A man has been arrested after allegedly throwing a device that police believe may have contained explosives into a crowd in Australia, police have said.
The incident occurred shortly after 12:30 local time (04:30 GMT) on Monday in a pedestrianised square in Perth, where the state premier said thousands had gathered for a rally supporting the rights of Indigenous people. It also coincided with the national holiday, Australia Day.
The 31-year-old man was detained at the scene and remains in custody. Police said the device did not detonate and no injuries have been reported.
It comes less than two months after an attack on Sydney's Bondi Beach targeting a Jewish festival left 15 people dead.
Witnesses to Monday's incident in Forrest Place said they saw the man throw an object towards the front of a stage while speeches at an Invasion Day rally were taking place, public broadcaster ABC News reported.
