An FIR against was registered against four persons under various provisions of the IPC and the Uttar Pradesh Prevention of Cow Slaughter Act, a police official said.
The incident occurred in the Mau-Shahjahanpur village here.
"The incident pertains to June 20, when a cow did not return home after grazing. The next day a frantic search was made. During the search, four persons were seen hiding the head and hide of the cow in the sand near river Ram Ganga," Superintendent of Police (Rural) Subhash Chandra Shakya told PTI today.
The accused persons are absconding, the officer added.