The two, undergoing treatment at Pariyaram Medical College Hospital, died last night, police said.
Nine more persons were battling for life with severe burns at different hospitals, police said.
Thirty-five people were injured when the LPG tanker overturned and exploded after hitting a road divider on August 27. Six houses, 15 shops and some vehicles were gutted in the resulting huge fire.
Two of the injured died on Tuesday, two succumbed to their burns on Wednesday and three others yesterday.
Driver of the tanker was absconding, police said.
