Three teenagers in the US state of New Jersey have been shot, two of them pronounced dead, raising the number of gun deaths on Christmas Day reported in the US media to seven.A 13 - year old girl and a 14 - year - old boy were fatally shot on Wednesday and a third teen involved in the shooting in Newark, New Jersey, is in critical condition, Acting Essex County Prosecutor Carolyn A. Murray and Newark Police Director Samuel A. DeMaio said in a statement to the Star - Ledger newspaper. The shootings happened around 10 p. m. and the names of the victims have not been released. Not far from where the teens were shot, three other people were killed and two others were injured at a nightclub in the neighboring township of Irvington just after midnight Wednesday, UPI reported. Gun violence in the US took more lives on Christmas Day. In Dorchester, Boston, a man was shot and killed early Christmas morning during a party, officials said. In another incident, shots were heard on neighboring Kingsdale Street and Talbot Avenue, early Wednesday morning and a second victim, a woman who was in a car during the shooting and was injured by glass debris, was taken to hospital and treated for minor injuries. Moreover, in Chicago, a man was shot to death early Christmas morning in the South Side and seven others were wounded in shootings across the city on Christmas Day and Christmas Eve. Meanwhile, four teenage boys were arrested on Christmas Eve for firing shots at a Central California high school teacher who tried to fight back during an attempted robbery at the school. The boys, armed with a handgun and a sawed - off shotgun, were confronted by Edison High School teacher Steven Guerrero who let them take a computer but then fought back and was shot in the stomach and leg. The police said he survived the injuries. According to an investigation by the Daily Beast, one school shooting has taken place in America every two weeks on average over the past year. Since the deadly shooting at an elementary school in Newtown, Connecticut, on December 14 which left 20 first - grade school children and six staff members dead, there have been nearly 12,000 gun deaths reported in the US media, according toan interactive projectbetween slate.com and the anonymous creator of the Twitter feed @GunDeaths. However, slate.com says based on the US Centers for Disease Control and Prevention estimates, the actual number of gun deaths in the US as of December 26, 2013, is roughly 35,000, almost three times more than the number reported in the media.