The restaurant was packed with diners at the time of the blast
The death toll in a bomb blast in the western Indian city of Pune earlier this month has risen to 15, with the death of two more men at the weekend.
Vikas Tulsiyan, 24, and Rajiv Agarwala, 23, who were initially wounded in the explosion at a restaurant, died in hospital on Sunday.
Four people have been questioned in connection with the 13 February blast.
The bombing was the first major strike of its kind in India since the deadly Mumbai attacks in November 2008.
The explosion tore through the German Bakery, a restaurant popular with tourists, when it was packed with diners.
Reports said an unattended package exploded when a waiter in the restaurant attempted to open it.
The German Bakery is located near the Osho Ashram, a mystic centre popular with visitors to Pune.
The blast came a day after India and Pakistan agreed to meet for talks in Delhi - their first formal negotiations since the Mumbai (Bombay) attacks.
India blamed Lashkar-e-Taiba, a Pakistan-based militant organisation, for the attacks in which more than 170 people, including nine gunmen, died.