The unidentified, low-latitude, gamma -ray source 3EG J1828+0142 presents h
igh levels of variability and a steep spectral index Gamma similar to 2.7.
Here we propose a model for this source where the high-energy emission is p
roduced by a galactic Kerr-Newman black hole. The model takes into account
electron-positron annihilation losses in the calculation of the expected sp
ectral energy distribution and can reproduce the observational features, in
cluding the absence of a strong radio counterpart. We also report the disco
very of a nearby supernova remnant that could be associated with the origin
al supernova explosion that created the black hole. Several faint radio sou
rces were also detected in the radio field within the inner gamma -ray conf
idence contour and their spectral index estimated. Some of these sources co
uld be the expected weak radio counterpart.