Officials said a man was shot at about 12:15 a.m. Saturday in Eddie G's Bar and died shortly afterward at a hospital.
Police said the shooting followed an argument among a number of people believed to have been gang members originally from Newark, N.J.
One man who ran out the front of the bar and another man who fled out the back are being sought.
Northampton county Coroner Zachary Lysek ruled the death of the victim a homicide. His name has not been released pending notification of relatives.
