Zitka had no problems getting over the rooftops, and was quickly able to locate both groups.  They were standing almost directly behind the armor shop.  Two of the men - the one in the red cloak that first came into the alley, and one of the two that entered later - were talking with each other in hushed voices, too low for Zitka to make out, but from their wild gestures, it seems they weren't getting along with each other too well.  The other three people were standing around nearby, watching the nearby area, and especially watching the two men arguing with each other.  Despite their searching, it seems they didn't notice Zitka yet.