A 6-year-old boy reportedly is undergoing surgery after he and four others were shot at a street party in New York City early Monday morning.

The boy and his mother – who is also among the victims – were struck around 3 a.m. in Brooklyn in a shooting that police believe is gang-related, although it's not clear if there were any intended targets, according to the New York Post. The gunfire erupted during J’Ouvert, an annual pre-dawn celebration of Caribbean culture.

“What we have right now is she was getting out of a cab with her son and then two individuals pulled out firearms and started shooting and they were both struck,” the newspaper quoted NYPD Chief of Detectives Rodney Harrison as saying.

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Harrison added the mother and son were arriving at a party when they were shot.

Sources told the New York Post that the mother was hit in the foot and the boy, who is undergoing surgery, suffered a leg injury.

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They also said the ages of the other three victims were 34, 40, and 46 – and they are all expected to survive.

As of midday Monday, two people have been arrested in connection to the shooting, pending charges, while a firearm was recovered at the scene, the New York Post reports.