Two people were stabbed to death and a third was undergoing surgery for life-threatening injuries as possible motive for the killings remained unknown, Auckland police said.
The police say at this stage there is no information suggesting the incidents are linked.
Avignon prosecutor says the assailant was a 33-year-old born in France “who had nothing to do with the Muslim religion” and appeared to be “psychologically unstable”.
The 18-year-old said he wanted to avenge the republication of cartoons of the Prophet Mohammed by the satirical weekly, which in January 2015 was targeted in a massacre carried out by gunmen.
UK counter-terrorism police have charged Khairi Saadallah, a 25-year-old Libyan refugee, with three counts of murder and three counts of attempted murder for a stabbing attack in an English park a week ago.
Six men are being treated in hospital, including a 42-year-old police officer in a critical but stable condition, after a stabbing incident in the port city of Glasgow that resulted in a man being shot dead by police.
Assistant Chief Constable Steve Johnson, of Police Scotland, said the incident was "contained" and there was no risk to the general public.
A 25-year-old man was detained at the scene and has been arrested on suspicion of killing three people, police say.
The attack happened at about 10:00 pm on Saturday, the seventh night of Hanukkah, with about 100 people gathered for a candle-lighting ceremony. Suspect Grafton Thomas denied the charges of five counts of attempted murder
Grafton Thomas, 37-year-old suspect, allegedly entered the rabbi's property in Monsey, Rockland County, during celebrations for the Jewish festival of Hanukkah, knifing several people before fleeing.
Police said the stabbing victim did not sustain life-threatening injuries and were investigating the discovery of a women's body in a nearby apartment that appeared to have stabbing wounds.
A Somali man identified as Hassan Khalif Shire Ali set fire to a pickup truck in the centre of Melbourne city and stabbed three people, killing one, before he was shot by police in what they called a terrorist attack claimed later by Daesh.
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