Hardeyesh Jindal, the father of Aditi, who sat on hunger strike at Polytechnic Chowk, told reporters that Baig had committed an "inhuman act" in which 17 innocent people were killed.
He demanded capital punishment for Baig, the lone arrested accused in the German Bakery blast case.
Jindal said if Baig was not awarded death penalty, he would start an indefinite fast at Pune along with the relatives of other 16 victims of the blast.
The victim sustained 80 per cent burn injuries and died in a hospital in Pune on February 26, 2010.
On April 15, Baig was convicted by a sessions court for murder, criminal conspiracy and other charges, more than three years after a powerful explosion rocked the popular eatery, killing 17 and wounding 64, in the first terror attack in Pune.
The judge fixed April 18 for pronouncing the quantum of sentence.