The unidentified , low-latitude , \gamma -ray source 3EG J1828+0142 presents high levels of variability and a steep spectral index \Gamma \sim 2.7 .
Here we propose a model for this source where the high-energy emission is produced by a galactic Kerr-Newman black hole .
The model takes into account electron-positron annihilation losses in the calculation of the expected spectral energy distribution and can reproduce the observational features , including the absence of a strong radio counterpart .
We also report the discovery of a nearby supernova remnant that could be associated with the original supernova explosion that created the black hole .
Several faint radio sources were also detected in the radio field within the inner \gamma -ray confidence contour and their spectral index estimated .
Some of these sources could be the expected weak radio counterpart .