Fourth arrest after Halloween party stabbings

As of November 5, 2026, multiple incidents of stabbings during Halloween parties in different cities have been reported. In Sydney, an 18-year-old man was hospitalized after being allegedly stabbed as police dispersed a house party in Marsden Park. In Chandler's Ford near Eastleigh, Hampshire, five teenagers, including three 16-year-olds and two 17-year-olds, were seriously injured at a Halloween party around midnight on October 31. A similar incident occurred at Studio 338 nightclub in London where a 21-year-old man was stabbed twice in the thigh during an event marking Halloween.

In West Covina, California, three people suffered stab wounds and additional victims arrived later at local hospitals after police were called to a fight near the 10 Freeway. The most severe incident involved a party in Chandler's Ford where 70 uninvited revellers entered over a garden fence, resulting in five boys being stabbed; a third teenager was arrested on suspicion of attempted murder and by November 4, a fourth boy had been apprehended.

The Sydney Morning Herald reported that police are investigating an assault filmed at Coolamon Oval in Ellenbrook where a young boy was bashed and threatened with a knife. Police warned against identifying the attackers or their families online to prevent further harm.