Police are sending an explicit warning ahead of next weekend's West Indian Day celebrations.

This flyer, which the 71st precinct of the NYPD posted on Twitter, is aimed at preventing a repeat of last year's deadly violence in Crown Heights.

Last Sept. 7, Carey Gabay, 43, a former aide to Gov. Andrew Cuomo was killed when he was caught in the crossfire of a gang shootout during the early-morning J'Ouvert procession on Labor Day.

Four men have been indicted in connection with Gabay's death.

Another man was fatally stabbed during the festivities in an unrelated incident.