SRINAGAR, Aug 04: Police have launched a massive crackdown against miscreants in Kashmir and arrested 450 youth from across the Valley.

"In its continuous drive against hooligans and miscreants, 349 accused persons have been arrested in the Valley," a police spokesman said, whereas 122 persons have been detained under "prohibitory provisions of law".

More than 50 persons have been killed and 5700 others injured in the ongoing street protests in Kashmir since the killing of Hizbul Mujahideen commander Burhan Wani  in an encounter on July 8, reports said.

As per reports, d the security agencies are using video footage and photographs to pinpoint the instigators among the protestors.