Any update on that recent (DC area?) gas station shooting?

This was a couple of weeks ago, and the details as I recall them was that a camera caught some guy walking up to someone pumping gas, shooting him, and killing him.

Meanwhile, another customer pumping gas just steps over the body when he finishes and drives away.

Have there been any new developments, such as finding the perp, or charging the drive-away with. . . driving away from a crime scene or some such thin?