Story highlights

Two bomb blasts killed at least 15 people and wounded 119 others in Hyderabad

Hyderabad's police didn't rule out the possibility of terror involvement

PM Manmohan Singh said "the guilty will not go unpunished"

Two bomb blasts killed at least 15 people and wounded 119 others on Thursday in the southern Indian city of Hyderabad, the city’s police commissioner, Anurag Sharma, said a day after the attack.

Sharma didn’t rule out the possibility of terror involvement in the city blasts. But he refused to identity any group as a suspect.

The two bombs were planted on bicycles parked in a crowded spot, the commissioner said.

Prime Minister Manmohan Singh called the strike a “dastardly attack” and said the perpetrators will be punished.