A 17-year-old boy has been hospitalised with severe burns to his backside, and four more men have been injured in separate incidents all involving illegal firework explosions.
Ambulance Victoria state health commander Paul Holman said that it was 'stupid behaviour' that landed the men in hospital.
Assistant Commissioner Mark Walton said on Monday morning that the 'only downside' of the 2017/2018 New Year's Eve was the use of illegal fireworks.
Four men and a teenage boy are recovering from injuries from accidents with illegal fireworks
A 17-year-old boy with severe burns to his bottom was admitted to Royal North Shore Hospital
The Cromer Heights teen was severely burned after a 'dangerous prank' involving a firecracker went painfully wrong, according to
Emergency services transported him to Royal North Shore Hospital with serious injuries just after 10.30pm on Sunday night.
In another incident, a 34-year-old man was seriously injured when a firework exploded in his hand at a property in Caroline Springs west of Melbourne.
ABC reported that the man is recovering in hospital as police continue to investigate the incident.
Just after midnight, another man aged in his 30s was flown to hospital after a firework exploded in his face. His