A terrorist, who was arrested by security forces during a shootout in Anantnag district of Jammu and Kashmir, succumbed to injuries at a hospital here on Friday, police said Zaheer Abbas Lone had sustained bullet injuries in the abdomen, a police official said Lone was arrested in Baba Gund Khaleel area of Anantnag district after a brief exchange of fire during an anti-militancy operation on Thursday, he added.