QUETTA - A driver was shot dead while his colleague was critically wounded when unknown armed persons opened indiscriminate firing on a trailer in Khuzdar district on Sunday. As per reports, a trailer carrying supplies for NATO forces deployed in Afghanistan was coming from Karachi and heading towards its destination via Chaman border when armed persons riding a motorbike opened firing on trailer near Lakorain area of Soorab. As a result, the driver of trailer was killed on the spot while his helper identified as Ahmad Khan sustained serious bullet wounds. The assailants escaped from the site after committing crime. Police rushed to the site shortly after the incident and shifted the deceased and injured to the Civil Hospital Khuzdar.