Firework displays are a common spectacle on New Year's Eve. But are they legal in Ireland and what are the rules governing their use?

Gardai say the woman in her 30s was treated at the scene on Halloween before being brought to hospital.

The incident occurred at the Craigavon Bridge in Derry on Friday.

The PSNI said the woman in her 30s was injured by the firework that was aimed at police.