Almost 100kg of fireworks seized at Queensland border following Territory Day celebrations

They insist they're not the "fun police".

But at a remote border stop in the tiny Queensland town of Camooweal, motorists and grey nomads entering from the Northern Territory have been met with flashing lights and sirens as authorities checked for a unique type of illegal cargo.

More than 5,000 fireworks were seized or voluntarily surrendered at the Northern Territory-Queensland border this week, totalling nearly 100 kilograms of explosives — double the amount of fireworks seized last year.

The two-day operation by police and Resources Safety & Health Queensland (RSHQ) targeted those entering Queensland with fireworks, after the Northern Territory's annual "Cracker Night" on July 1.

The use of fireworks is banned or severely limited across other parts of Australia, but things work a bit differently in the territory, with people in the NT allowed a five-hour window every year to detonate fireworks as part of Territory Day celebrations.

Operation 'Bright Sky'

Snezana Bajic, deputy chief of explosives at RSHQ, says many people entering Queensland from the territory are unaware they could face maximum penalties of six months imprisonment or a $64,520 fine.

"They didn't know the dangers, they just thought they would have fun. One of [the families] spent over $2,000 on these fireworks."

"It's not only people, it's property around us. We have to keep Queenslanders safe — that's the main goal."

This year, the NT's annual firework night resulted in at least four people being injured, including a six-month-old with facial burns and a 37-year-old with burns to the groin region.

Ms Bajic said the joint two-day border patrol, dubbed Operation Bright Sky, is about protecting people and preventing bushfires started by fireworks.

"Animals can be injured as well, we had cases with serious injuries of horses. So it's not only people, it's property, it's everything around us."