New Delhi: A man injured in the Delhi High Court blast succumbed to injuries on Saturday, taking the death toll in the terror attack to 15.

58-year-old Rattan Lal died at 8.20 am in the Ram Manohar Lohia Hospital. He was in a serious condition and both his legs had been amputated, doctors said.

He is survived by wife, three daughters and a son.

"He had expressed his desire to meet his wife and son and we had agreed," the doctor said.

Twenty-four victims of the blast are undergoing treatment in different city hospitals -- 11 in RML, five in AIIMS, four in Safdarjung, two in Max and one each in Moolchand and LNJP.

The explosion outside Gate No 5 of the High Court had left over 70 people injured, many of them seriously.