You will be asked by a couple persons to get an item of theirs (an injector and a red tube). Both these can be found by following Asif after buying a shiv from his friend. If you are near him when he hides the money you paid for the shiv, he attacks and you are killed by the rail defenses. When you see him go into the back of the Feed Ward, move away and wait in the area where there are the guards beating up an inmate. When Asif comes into the area, kill him, then go to the back of the Feed Ward to find a loose panel. The red tube and injector are there, along with the 30 U.D. you paid to get the shiv.