"He robbed me." The merchant says
"You are under arrest for murder and robbery." The guards grab you and pull the money out of your pocket and hand it to the merchant before towing you away.
Apparently the action here has attracted the attention of the Guards.
They rush onto the street and another vendor tells them what happened.
They come over to you and ask. "Whats going on?"
*sigh* I hate playing with insane people.
The person who you grabbed the sword from hesitantly approaches and mentions that you owe him money for the sword.