Temperature induced magnetic phase transition in the interstitial compound LaFe11.6Si1.4C0.2 was studied by zero-field Mössbauer spectroscopy. A paramagnetic doublet and a magnetically split sextet co-existed in the
zero-field spectra in the temperature region of 213-218 K, and a thermal hysteresis was observed in the heating and cooling
cycles. The spectra indicate that the magnetic phase transition induced by temperature is of first order for this sample.