By Saleem Shahid in Dawn, April 10th, 2023QUETTA: Two cops were martyred and one was injured in an attack by unknown assailants in the Killi Spine area of Kuchlak district on Sunday evening, police said. The policemen, who belonged to the Eagle Squad, were patrolling on a motorcycle when the assailants opened indiscriminate fire, leaving three injured. One of the assailants was killed while the other managed to escape as cops returned fire. The injured…