  Angular correlation spectra of $e^+e^-$ pairs produced in the
$^{7}$Li($p$,$\gamma$)$^{8}$Be nuclear reaction have been studied at the sharp
$E_p$= 441 keV resonance as well as at $E_p$= 650 keV, 800 keV and 1100 keV
proton beam energies. The spectra measured at the resonance can be understood
through the M1 internal pair creation process, but in the case of the
off-resonance regions (direct proton capture) significant anomalies were
observed in the $e^+e^-$ angular correlations supporting the X17 hypothetical
particle creation and decay.
