  In the inner regions of an accretion disk around a black hole, the presence
of non-thermal protons would via p-p collisions produce electrons, positrons
and $\gamma$-rays. For such a scenario, the steady state electron-positron
distribution is computed taking into account Compton cooling, $e^{-} e^{+}$
pair production (due to $\gamma-\gamma$ interactions) and pair annihilation.
The resultant spectra has a broad feature around $1 - 10$ MeV which may be
tested with observations by INTEGRAL and GLAST. Using the available OSSE data
for the black hole system, GRS 1915+115 we illustrate that an upper limit on
the non-thermal proton fraction can be obtained, which may put constraints on
the acceleration process active in this system.
