To press for capital punishment to the convict in the Pune German Bakery blast, the father of one of the victims, Aditi Garg, began a hunger strike at Polytechnic Chowk here on Wednesday.
To support him, several city residents also joined the fast.
Ambala city resident Hardesh Jindal's daughter was one of the 17 persons killed in the German Bakery blast.
She had sustained severe burns in the terror attack that took place on February 13, 2010, and had succumbed to injuries in a Pune hospital on February 26.
Aditi, then 22, was pursuing an interior-designing course at an institute there and had gone to the bakery with friends on the fateful day.
On Monday, Pune additional sessions judge NP Dhote had held Mirza Himayat Inayat Baig, the only person arrested in the case, guilty. The court will announce the quantum of sentence on Thursday.
The trial of Baig's accomplice, Abu Jundal, is yet to start. The anti-terrorist squad of Maharastra is still on the look out for the remaining five perpetrators of the blast.
Talking to mediapersons, Jindal said Aditi's death was a tragedy for the family, which had remained at Pune during her treatment.
He demanded that the remaining accused should also be arrested and tried. "I will be on fast till April 18," he said.
Flaying the investigating agencies, he said that he never wanted to contact investigators during the past three years even though he had lost his daughter.
Jindal said that if the death sentence was not awarded to Baig and other perpetrators were not arrested, he would contact the families of other victims and sit on a fast in Pune.
"Jundal's trial should be fast-tracked, too," he said.