  The Fermi-LAT \gamma-ray data have been used to study the morphological and
spectral features of the so-called GeV excess - a diffuse radiation component
recently discovered towards the Galactic centre. We used the likelihood method
to analyze Fermi-LAT data. Our study does confirm the existence of such an
extra component in the diffuse \gamma-ray emission at GeV energies. Based on a
detailed morphological analysis, a spatial template that fits the data best was
generated and adopted. Using this template, the energy distribution of
\gamma-rays was derived in the 0.3-30 GeV energy interval. The spectrum
appeared to have less distinct ('bump'-like) structure than previous reported.
We argue that the morphology of this radiation component has a bipolar rather
than a spherically symmetric structure as has been assumed a priori in previous
studies. This finding excludes the associations of the GeV excess with Dark
Matter. We briefly discuss the radiation mechanisms and possible source
populations that could be responsible for this new component of diffuse gamma
radiation.
