This was once one of the most populous areas of Neverwinter City. Now, it's a lawless ruin plagued by Nashers and Dead Rats. My employer would like people to move back into the District, but for that to happen, we have to clean it up. In short, we have to get rid of the gangs.
Two gangs is a very easy problem to solve. Take this letter. I'm marking a spot on your map. Place the letter in this spot, and make sure there are no witnesses. When you've done that, come back to me and I'll give you further instructions.