While Paramanandan died yesterday, Abhimanyu succumbed to injuries today, Chief Minister K Palaniswami said in a statement here.
Expressing grief over their death, he announced a relief of Rs one lakh each to their families.
The two men were undergoing treatment at a government hospital here.
A fire and rescue services personnel was killed and 48 persons were injured when an LPG cylinder exploded during a fire that broke out in a bakery near here on Saturday.
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