New Delhi , India ( CNN ) -- 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 did n'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 , Sharma said . They were improvised explosive devices , he said , and they could have been triggered by a timer . Prime Minister Manmohan Singh called the strike a `` dastardly attack '' and said `` the guilty will not go unpunished . '' He directed government agencies to extend all possible relief to authorities in Andhra Pradesh state . He also approved money for the next of kin of those killed and for others seriously injured .
at least 15 bomb blasts killed 119 people and wounded at least 15 others in Hyderabad . India 's police did n't rule out the possibility of terror involvement . CNN said `` the guilty will not go unpunished ''