A male between ages 18 to 20 years old was shot in the chest at around 3.50 a.m. local time and died later at hospital, according to local police. About 25 minutes later, a 22-year-old woman was shot in the left eye just a block away and died at a hospital, Xinhua news agency reported.
At least two others were shot and wounded but expected to survive, police said.
J'ouvert, which means daybreak, is an annual pre-dawn celebration held ahead of the annual West Indian Day Parade.
The event had a history marred by violence. In 2015, a top aide to New York State Governor Andrew Cuomo was killed by a stray bullet during the celebration.
The investigation is ongoing and no arrests have been made yet.
