SafeWork NSW are encouraging people to stick to attending official displays with a fine of up to $27,500 and 12 months jail awaiting anyone caught selling, purchasing or letting off fireworks without a licence. 

Authorities seized close to 150 kilograms of fireworks from a property in Sydney's north in recent days and initial inquries suggested they were going to be sold or used illegally.  

Minister for Innovation and Better Regulation Matt Kean said the products are now being held while investigations continue. 

“However, it serves as a timely warning for anyone using fireworks; these items are not toys," Mr Kean said.

"In the wrong hands they can be very dangerous and capable of causing horrific injuries, including burns, loss of limbs, or even death.” 

Last New Year's Eve, a 52-year-old man tragically lost his life after being hit in the head by an illegal firework on the state's Central Coast. 

“That’s why fireworks should only be set off by trained and licensed individuals who know how to manage the risks and ensure everyone’s safety," Mr Kean said. 

“We want New Year’s Eve to be memorable for all the right reasons, not because a loved one was maimed through the illegal use of fireworks.

“My message is simple: if you’re thinking about buying or selling illegal fireworks this summer, you will be caught and you will face significant penalties."