Photoconductivity in thin films of a-In 20Se 80 is investigated. The temperature dependence of steady-state photocurrent and dark current was observed and both dark and photoconductivity are found to be activated processes. There is found to be a power law dependence of photocurrent on light intensity. Rise of photocurrent shows an anomalous behaviour by first attaining a maximum and decaying to a steady value thereafter. This behaviour is observed at different temperature and illumination intensities. The decay of photocurrent after the cessation of illumination was found to consist of two parts, a fast decay in the beginning and a slow decay afterwards. Both parts of the decay were found to be exponential with different recombination time constants. The results are explained in terms of BL and LL bimolecular recombination processes taking place in glasses.