  We present evidence of coexistence of electron paramagnetic resonance signal
and anti-ferromagnetic resonance signals above the anti-ferromagnetic (AFM)
transition ($T_N$) in $Pr_{0.5}Ca_{0.5}MnO_3$. We identify the latter with AFM
rare regions within the Griffiths-like phase scenario with the associated
temperature scale $T^\ast$ extending above room temperature.
