Students set ablaze 15 vehicles, including two police jeeps, and indulged in heavy stone-pelting in Colonelganj area as they took to the streets protesting the murder of Kamlesh Yadav, a contestant for the Allahabad Students Union polls.
One person had been arrested in connection with the murder that took place last night, police said adding a massive hunt was on to apprehend the other two involved in the crime.
Students also called for a shutdown in the town which evoked a partial response.
Twelve people had been arrested in connection with the violence triggered by the murder, Principal Secretary (Home) Alok Sinha said adding more arrests were likely.
The body of Yadav, a Samajwadi Yuvjan Sabha nominee for the post of General Secretary for the Students Union polls, was cremated today.
The District Administration had suspended nine policemen, including two Sub-Inspectors and two Head Constables, in connection with murder of the student leader.
DIG (Allahabad Range) Akhilesh Mehrotra said police were conducting raids at several places in the city to nab the two who had fled after committing the crime. He said a driver of one of the contestants Manoj Singh, an NSUI nominee seeking re-election for the post of President, had been arrested in connection with the murder.
A gun and two vehicles used in the crime had been seized, the DIG said adding Singh was yet to be traced.
The District Administration ordered closure of the Allahabad University and its affiliated colleges for the day and even asked shopkeepers to down shutters till mid-day as a precautionary measure.
The shops opened in the afternoon though tension ran high in violence-rocked areas.
The house of Manoj was also reportedly attacked, police said adding students also blocked traffic at some places.
The situation was brought under control after heavy deployment of police and para-troopers.
The agitated students were pacified by Samajwadi Party leaders, including party MP from Mainpuri and nephew of Uttar Pradesh Chief Minister Mulayam Singh Yadav, who said the culprits would be brought to book soon.