On the afternoon of January 27, 2015, a dispute inside Adrian Deli & Grocery on Nostrand Avenue in East Flatbush escalated and ended with the death of 42-year-old Kerwin Craigwell. The argument moved outdoors at about 2:40 p.m.; Craigwell slipped on the snow-covered sidewalk and was struck when the other man, identified by an eyewitness as 31-year-old Herman Lancaster of Flatbush, opened fire. No one else was reported injured.

The NYPD apprehended Lancaster within minutes during a canvass of the area. He was arrested and prosecuted for the killing; following a non-jury trial he was convicted of second-degree murder and two counts of second-degree criminal possession of a weapon. In January 2017, Brooklyn Supreme Court Justice Danny Chun imposed a sentence of 23 years to life for the homicide.

If anyone witnessed the dispute that day or has information about the events leading up to the shooting, please share what is known.