QUETTA - Four people were injured in a rocket attack on Qambarani Road in the provincial capital on Thursday.According to SP Amanullah Kakar, a private bank cash van was on its way, when unidentified armed men fired a rocket at it. As a result, four security guards, on board, sustained serious injures.Police rushed to the spot soon after the incident and cordoned off the area. The injured, Muhammad Jan, Akbar Khan, Mohammad Naeem and Mohammad Arif, were ferried to the Quetta Civil Hospital for treatment. No group claimed the responsibility for the attack.A case has been registered against the unidentified attackers.Meanwhile a man was gunned down in Faizabad area of Sariab. He was identified as Jogee Sommoro, snake charmer. The motive behind the killing could not be ascertained.