Fifteen-year-old Jaylyn Wheeler was walking home from Ballou High School on the afternoon of May 16, 2018, when he was shot multiple times in the 600 block of Alabama Avenue SE in Washington, D.C., in an alley across from Martin Luther King Jr. Elementary School. He was taken to a hospital and pronounced dead.

Police identified 16-year-old Daquan Gray as a suspect and sought his arrest on a charge of first-degree murder while armed, saying the shooting stemmed from an ongoing dispute between two groups of students at the high school. Gray turned himself in days after the warrant was issued and was charged as an adult; he pleaded not guilty. The prosecution later made a plea offer that Gray rejected. The defense sought dismissal of the case over alleged mishandling and contamination of DNA evidence, but a judge denied that motion.

Jaylyn’s mother spoke at a vigil, describing her heartbreak and urging an end to the violence that took her son’s life. If anyone knew Jaylyn, saw him that afternoon, or has information about the alley on Alabama Avenue SE, please share what you know.