QUETTA: A Balochistan Constabulary officer was killed and four others injured in a remote-controlled bomb blast in the Eastern Bypass area here on Thursday. Police sources said that unidentified men planted a remote-controlled bomb in the provincial capital.”The bomb exploded when an official Balochistan Constabulary van was passing by, killing one constable on the spot and injuring four others,” they said. The rescue teams rushed to the scene and shifted the dead and injured to hospital. Police said the van was on a routine patrolling exercise when it was targeted, and that four to five kilogrammes of explosive material were used in the blast. The deceased was identified as Head Constable, Aataa Muhammad and the injured were revealed to be Raziq, Abdul Wahid and Shabbir Hussain. The law enforcement agencies cordoned off the entire area and launched a search operation to hunt down those responsible.