A 29-year-old Frenchman shouted “All-hu Akbar” as he stabbed a British woman to death and wounded two people at a backpackers’ hotel in northern Queensland, police said on Wednesday.
The man was in Australia on a valid tourist visa and had no known links to radical groups such as Islamic State, which has urged its followers to attack civilians with knives or other readily available weapons, police said.
A 30-year-old British man was in critical condition in the hospital after the attack south of the city of Townsville late on Tuesday night.
Police said they were not ruling out any motive.
“Initial inquiries indicate that comments which may be construed of being of an extremist nature were made by the alleged offender,” Queensland Police Service Deputy Commissioner Steve Gollschewski told reporters. “This person appears to have acted alone,” he said. “He is a visitor to Australia and has no known local connections, however investigations are ongoing.”
About 100 people have left Australia for Syria to fight alongside organizations such as Islamic State, the Immigration Minister reported earlier this year.
Australia, a staunch U.S. ally, has been on heightened alert for attacks by home-grown radicals since 2014 and authorities say they have thwarted a number of plots.
There have been several “lone wolf” attacks in Australia, including a 2014 cafe siege in Sydney that left two hostages and the gunman dead. Also in 2014, police shot dead a Melbourne teenager after he stabbed two counter-terrorism officers.
In 2015, a 15-year-old boy fired on an accountant at police headquarters in a Sydney suburb and was killed in a gunfight with police.
Police did not give details of the third person wounded in the attack, which was captured on video and witnessed by more than a dozen people. According to Gollschewski, there is no ongoing threat to the community.
The FBI on Tuesday said that it was investigating an attack in Virginia, in which the lone-wolf suspect shouted the same words while attacking a man and woman with a knife. Similar attacks have also recently occurred in France, Bangladesh and Germany.