Four persons were injured in a bomb blast here at a cold drink shop in busy Liaqat Bazaar Tuesday afternoon. DIG (Operations) Quetta police, Wazir Khan Nasir told reporters that the bomb was planted in the shop and exploded when a number of customers were sitting there. As a result, four persons were injured of whom one sustained critical injuries. The shop was completely destroyed. The injured had been identified as Amir, Rehan, Munir while identification of the fourth injured could not be ascertained. They were rushed to civil hospital where condition of all injured is stated to be stable. Police officials rejected possibility of suicide attack and said it was a time bomb.