Bentley mentions that Salim Al-Kupar is in hiding, but is still in the area. He enhanced your Binocucom to see whatever Salim has been in contact with last. Go into the lamp shop, which is already marked on your map. Once inside, use your Binocucom to take a picture of the lamp on the left side, then take a picture of the door and exit the shop.
There will now be three markers on your map. You must go to each of these, which will trigger Bentley to mention that something is nearby with Salim's DNA on it (they will be marked once you get to the previous markers). Once you find all three and take a picture of them, Bentley says that Salim is on a boat. Go there and inside to find him, which will be the end of the mission.