A gang member was arrested Sunday night in connection with being in possession of a firearm and a violation of a gang injunction, officials said.Police were working gang enforcement in the downtown Oxnard when they conducted a traffic stop near Third and B streets about 10:10 p.m., officials said.The passenger, later identified as Alvaro Cervantes, 30, from Oxnard was found to be currently on probation and on the Colonia gang injunction, officials said.