The protestors pelted stones on a security force convoy passing through Ganovpora village in Shopian district, they said.
The security forces allegedly fired few rounds to chase away the protestors in which several persons were injured, the officials said.
Two of the injured persons, identified as Javaid Ahmad Bhat and Suhail Javid Lone, succumbed to injuries, they said.
The officials said another youth was rushed to a hospital in Srinagar in a critical condition for specialised treatment.