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HESS J1825-137 is a bright very-high-energy (VHE) gamma-ray source that hasbeen firmly established as a pulsar wind nebula (PWN), and one of the mostextended gamma-ray objects within this category. The progenitor supernovaremnant (SNR) for this PWN has not been firmly established. We carried out ananalysis of gamma-ray observations in the region of HESS J1825-137 with theFermi-LAT which reveal emission in the direction away from the Galactic plane.The region lies beyond the PWN and reaches a distance from the pulsarcompatible with the supposed location of the SNR shock front. The spectrum ofthe gamma-rays is hard with a photon index of $\sim 1.9$ in the 10-250 GeVrange. Several scenarios for the origin of the emission are discussed,including the SNR as a source of high-energy particles and the "leakage"' ofleptons from the PWN.

Revealing a new region of gamma-ray emission in the vicinity of HESS J1825-137