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We present the results of a deep (80 ks) XMM-Newton survey of one of thelargest sample of near-infrared selected Extremely Red Objects (R-K>5)available to date (~300 objects, Daddi et al. 2000). The fraction ofindividually detected, X-ray emitting EROs is of the order of ~3.5%, down toF_x > 4x10^-15 cgs and Ks<19.2. In order to derive the X-ray intrinsicproperties of AGN EROs and to place our findings in a broader context, we havealso considered all the X-ray detected EROs available in the literature. TheX-ray, optical, and near-infrared properties of those X-ray selected EROs witha spectroscopic or photometric redshift nicely match those expected for quasars2, the high-luminosity, high-redshift obscured AGNs predicted in XRB synthesismodels.Comment: 4 pages, 2 figures. To appear in the proceedings of 'Multi-wavelength  AGN surveys', Cozumel (Mexico), 8-12 December 200

ARE QSO2 HIDING AMONG EROS?