Obama vows to hunt Boston Marathon bomber
President Barack Obama promised a grieving Boston to hunt down whoever was responsible for the deadly bombing at the marathon, while investigators focused on a man seen dropping off a bag and walking away from the site of the second of Monday’s two explosions.
The discovery of the image – found on surveillance footage from a department store near the finish line – was detailed by a city politician two days after the attack that left three people dead and wounded more than 170.
