The accused has been identified as Furkan, a resident of Jamia Nagar, said cops.
Furkan's father, Muhammad Naeem has said police took his son on the account of the CCTV footage which showed him carrying a container but it was not known whether there was water or petrol in it.
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"Police took my son on Thursday at around 6.30 pm on the basis of CCTV footage. Police said they saw he was carrying a container on the day of the incident," Naeem said.
Police said in 10 cases registered in connection with the violence in Jamia Nagar, 102 people have been arrested so far.