HRS §132D-26
What happens to fireworks that police take
Police and fire departments can safely get rid of fireworks they take, but they must keep one sample of each type for evidence in court.
The statute, as written — Disposal of confiscated fireworks or articles pyrotechnic
Any law enforcement agency or county fire department that confiscates prohibited fireworks or articles pyrotechnic pursuant to this chapter may safely destroy or dispose of the confiscated fireworks or articles pyrotechnic; provided that the law enforcement agency or county fire department shall retain a sample or specimen of each type of confiscated firework or article pyrotechnic for evidentiary purposes.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.