A daylight ambush at a Queens gas station left 28-year-old Derek Quattlebaum dead on January 20, 2015. He was at a BP on the corner of the Van Wyck Expressway and Atlantic Avenue when two men approached and opened fire, striking him multiple times in the head, torso, and limbs. Quattlebaum was taken to Jamaica Hospital Center, where his wounds proved fatal.

Surveillance footage released by police showed the suspects fleeing in a blue 2003 Audi A6 with Vermont plates after approaching Quattlebaum beside his Porsche SUV. The footage also captured Quattlebaum trying to flee down Atlantic Avenue before he was pursued and shot again at close range.

On March 15, 2015, two Brooklyn men were arrested and charged in the case: Charles Williams, 26, and Moeleek Harrell, 25, both from Brownsville. Police reported both men had extensive arrest histories; the victim also had prior arrests.

Did anyone see the blue Audi A6 or notice unusual activity at that BP on January 20, 2015?