"A group of Templar privateers recently ransacked merchant ships off the coast. They're hiding with their stolen goods somewhere in town."
Approach the Restricted Area from the East. Use the lengthy tree-based free running course starting behind the general store there to move into position. From the end of it, use your vantage point to locate your target. Hit him with a Berserk Dart to finish things. A pistol shot works too, just it results in more of a chase after.