Anyone hoping to celebrate Halloween with a fireworks display has been warned that Thursday is the closing date for licence applications.
Last year the PSNI reported 398 people to the Public Prosecution Service for possessing fireworks without a licence.
Police have urged members of the public not to make the same mistake this year.
Applications for a licence must be submitted before midnight on Thursday. Police said fireworks should be purchased from a licensed supplier.
However, the Firearms and Explosives Branch said that some late applications may be considered.
The licence fee, where there are fewer than 100 spectators, is £30. For 100 to 1,000 spectators, it is £80 and for more than 1000 spectators, £160.
The Royal Society for the Prevention of Accidents said the use of safe and legal fireworks is of paramount importance.
Licence application forms can be obtained from Northern Ireland Direct by typing the keyword "Fireworks" in the search section.