MELBOURNE, Australia (AP) — A 16-year-old boy armed with a knife was shot dead by police after stabbing a man in the Australian west coast city of Perth, officials said Sunday.

The incident occurred in the parking lot of a hardware store in suburban Willetton on Saturday night.

The teen allegedly attacked the man and then rushed at police officers before he was shot, Western Australian Premier Roger Cook told reporters on Sunday.

“There are indications he had been radicalized online,” Cook told a news conference.

“But I want to reassure the community at this stage it appears that he acted solely and alone,” Cook added.

Police and Australian Security Intelligence Organization agents have been conducting a counterterrorism investigation in the east coast city of Sydney since a 16-year-old boy stabbed an Assyrian Orthodox bishop and priest in a church on April 15.