The KLOE experiment at the Frascati φ –factory recently obtained results on i) CPT and Lorentz invariance tests from the study of quantum interference of the neutral kaon pairs; ii) precision measurement of the branching fraction, BR(K+ → π + π − π + (γ ) ) = 0.05565 ± 0.00031stat ± 0.00025syst , and iii) on dark photon searches with the analysis of the e + e − → µµγ final state. We have also studied the transition form factors of the φ meson to the pseudoscalars, π 0 and η , that is presented in a separate contribution to this volume.