Abstract
We report γ-ray afterglow observations of GRB 110625A using Fermi's Large Area Telescope (LAT) above 100 MeV. Gamma-ray emission was clearly detected using data taken between 180 s and 580 s after the burst. The GeV light curve differs from a power-law decay, and probably consists of two emission periods. Simultaneous Swift/XRT observations did not show flaring behaviors, distinguishing its origin of the extended GeV emission from the case of GRB 100728A. © EAS, EDP Sciences 2013.