Mn K-edge X-ray absorption spectroscopy was used to determine the electronic and geometrical local structure at the Mn site in LaMnO 3 + δ (δ = 0, 0.07, and 0.15) series. The XANES spectra of LaMnO 3 + δ samples show a mixed valence oxidation state for the Mn atom similar to that found in La 1 − x Ca x MnO 3 series. EXAFS spectra show a distorted Jahn—Teller octahedra for LaMnO 3 which is drastically reduced as δ increases. Otherwise, an anomalous structural disorder, reported for the paramagnetic phase in magnetoresistive compounds, is also present at low temperatures in this series.