According to a CBI release, Mani Prasad, the accused, is a police sub-inspector, Railway Protection Force, South Central Railway, Guntur.
The complainant's land adjoins the railway tracks in Thummala Cheruvu village. While repairing embankment along the land with a JCB, a cable of Railway department got cut.
Mani Prasad allegedly threatened to file a case against him for damaging the railway property, and demanded Rs one lakh for not filing a case.
The amount was later reduced to Rs 30,000. CBI, Visakhapatnam, laid a trap and caught Prasad red-handed at Nadikudi railway station while taking the money yesterday.