Anyone who suspects their neighbours may have illegal fireworks in their house should call the anonymous hot line of safety foundation VeiligheidNL, the organisation said on Tuesday.

Despite efforts to curb the import of illegal fireworks, it is estimated that between one and two million kilos of fireworks will be stored in private homes in the run up to New Year.

Because buyers of illegal fireworks are not easily scared off, the campaign is aimed at the neighbours. ‘It’s important that people speak out about having explosives in their neighbourhood,’ a spokesman told broadcaster Nos.

In an effort to generate publicity for the campaign, the safety organisation has been sending a man dressed in a bomb disposal suit to knock on doors and ask the occupiers if they would take in a parcel for the neighbours. The parcel is made to look as if it contains fireworks.