After the clash, nearly a score vehicles were torched and vandalised, traffic on the highway blocked and a police contingent was pelted with stones.
The incident took place in Sarai Inayat Police station area of the district, around 40 kms from the city. It was a skirmish between two groups, comprising members of the same political party but which supported different candidates in the ongoing block president elections, Senior Superintendent of Police, Allahabad, K S Immanuel said.
It took the police nearly an hour to bring the situation under control though by then several vehicles were vandalized and some others, including a fire brigade, set on fire, the SSP said.
"We have arrested five persons from the spot. It is yet to be ascertained as to who pulled the trigger resulting in the death of a person. SP MLA from Handia Prashant Singh was caught in the melee. However, our personnel managed to ensure that he remained unhurt," the SSP claimed.
"After the results, Raj Kumar was declared elected and Prashant Singh went to the booth to congratulate him. This infuriated the rival group which attacked Raj Kumar's victory procession in which the MLA (Prashant Singh) was also present," sources added.