  The 'two-electron' doped rare earth mangnites Ca_1-x Ce_x MnO_3 (x = 0.1,0.2)
are probed using resistivity, ac susceptibility and electron paramagnetic
resonance (EPR) measurements across their respective charge ordering (CO)
temperatures T_CO = 173 K and 250 K. The EPR 'g' factor and intensity as well
as the transport and magnetic behaviours of the two compositions are
qualitatively similar and are as expected for CO systems. However, the EPR
linewidth, reflective of the spin dynamics, for x = 0.1, shows a strongly
anomalous temperature dependence, decreasing with decreasing temperature below
T_CO in contrast with the sample with x = 0.2 and other CO systems. Keeping in
view the evidence for magnetic frustration in the system, we propose that the
anomalous temperature dependence of the linewidth is the signature of the
occurrence of a disorder driven spin liquid phase, present along with charge
ordering.
