Five policemen had suffered injuries in the brickbatting by a group at the polling centre under Marehra police station on Thursday.
FIR had been registered against 11 people for being involved in the brickbatting incident on the complaint of Sub-inspector (Kotwali) Kailash Dubey, they said.
One of the accused, identified as Ajay and resident of Azmatganj village in the district, has been arrested, police said, adding that hunt was on for the others.