We analyze publicly available Fermi-LAT high-energy gamma-ray data and confirm the existence of clear spectral feature peaked at E _ { \gamma } = 130 GeV .
Scanning over the Galaxy we identify several disconnected regions where the observed excess originates from .
Our best optimized fit is obtained for the central region of Galaxy with a clear peak at 130 GeV with local statistical significance 4.5 \sigma . The observed excess is not correlated with Fermi bubbles .
We compute the photon spectra induced by dark matter annihilations into two and four standard model particles , the latter via two light intermediate states , and fit the spectra with data .
Since our fits indicate sharper and higher signal peak than in the previous works , data favors dark matter direct two-body annihilation channels into photons or other channels giving only line-like spectra .
If Einasto halo profile correctly predicts the central cusp of Galaxy , dark matter annihilation cross-section to two photons is of order ten percent of the standard thermal freeze-out cross-section .
The large dark matter two-body annihilation cross-section to photons may signal a new resonance that should be searched for at the CERN LHC experiments .