Dimapur: A man and his daughter were killed while two other family members injured in a grenade blast at a warehouse in a hospital campus in Nagaland's commercial hub Dimapur on Saturday evening, police said.

The deceased were identified as 40-year-old Prakash Vishwakarma and his daughter Ruth Gurung, while the two injured were Prakash's son-in-law Deepak Gurung and grandson Robin, who is only four years old.