Police have seized more than $100,000 in drugs headed for the Gold Coast to cut the supply before this year’s schoolies celebrations.

Queensland Police Minister Mark Ryan says officers have been working hard to catch drug runners in the lead up to the end-of-school festivities.

The three-week event begins on Saturday.

A five-month police operation resulted in the seizure of packaged ice, cocaine, MDMA, LSD, cannabis and other drugs. Firearms were also seized.

Police arrested 31 people on 119 charges.

Jon Wacker, from the Drug and Serious Crime Group, says the operation targeted online platforms, including on the dark web, which are used to sell drugs.

“We believe some of those drugs would have made their way into the schoolies environment,” Detective Superintendent Wacker said on Wednesday.

Mr Ryan congratulated police on getting the drugs off the streets.

“We are now just days away from a significant amount of young people embarking on end-of-year school celebrations across Queensland,” Minister Ryan said.

“It is very concerning these networks were planning to target the Gold Coast, which will be overflowing with vulnerable youth from this weekend.”

Overt and covert police operations will continue, including on the Sunshine Coast, which is an increasingly popular schoolies destination.

-with AAP