Etah, Police said that, an FIR was filed against unidentified people for opening fire on a police party at a crossing in Raja Ka Rampur when the cops tried to stop a tractor-trolley carrying sand.
According to the police, "The incident took place last night when police were checking vehicles at the crossing. They tried to stop the trolley but it sped away. After that, four persons came in a car and allegedly fired on the police party".
The accused identified as Pappoo and three others in this connection.
Investigation is underway on the case.