A bomb exploded on a busy street in the southwestern Pakistan city of Quetta on Friday, killing a 4-year old girl and wounding 11 other people, according to AP. The bomb was rigged to a motorcycle and it exploded outside a commercial bank, said Raja Mohammed Ishtiaq, a Quetta police officer. Four of the wounded were traffic police on duty nearby, and others were passers-by, said Mohammed Khalid, another police officer. The explosion damaged windows of four cars parked in front of the bank and the wreckage of the motorcycle _ to which Ishtiaq said the bomb was attached _ lay scattered on the roadside. There was no immediate claim of responsibility.