The clash broke out as a group of youth indulged in stone pelting on security forces there, a police official said.
He said the security forces fired tear gas shells to chase the stone-pelters but in vain.
Then they used pellet guns to bring the situation under control, the official said.
One youth, identified as Mudasir Ahmad, suffered multiple pellet injuries, the official said, adding he was rushed to SMHS hospital for treatment.
The police also took JKLF chairman Mohammad Yasin Malik into preventive custody from Abi Guzar area of the city.
Malik and his associate Bashir Ahmad were sent to Central Jail, Srinagar, on four days' judicial remand, a JKLF spokesman said.