The Central Bureau of Investigation (CBI) has arrested an inspector of the Railway Protection Force (RPF) for allegedly accepting a bribe of Rs 1 lakh from a man for releasing his father who had been arrested in two cases in Maharashtra's Akola district, an official said on Saturday.

The CBI's Nagpur-based anti-corruption branch on Friday caught the RFP inspector and his aide through whom he had demanded and accepted the bribe, the official said.