Two teenagers have been charged in connection with a deadly stabbing inside a convenience store in Lynn on Tuesday night, law enforcement officials announced Wednesday. One teen will be arraigned as an adult in Lynn District Court on a charge of murder, while the second teen will be arraigned on a charge of possession of a dangerous weapon, according to Essex District Attorney Paul F. Tucker and Lynn Police Chief Chris Reddy. Their names haven’t been released. Officers responding to the Alpha Convenience Store at 1 Freeman Square around 6 p.m. found a third teen suffering from serious stab wounds, officials said. The victim, whose name hasn’t been released, was pronounced dead at Salem Hospital a short time later. Their identity is being withheld pending notification of family and friends. The convenience store owner told Boston 25 News that two groups of teenagers, apparently known to each other, started throwing punches. The encounter then escalated and one person was fatally sta...