Jalen Tyler, 21, was shot and killed on September 6, 2020, in the University Village neighborhood on Chicago’s Near West Side. Officers arrived after reports of gunfire at about 3:26 a.m. and found Tyler on the ground with two gunshot wounds to the side of his head. He was taken to Stroger Hospital and pronounced dead shortly after arrival; the Cook County medical examiner ruled the death a homicide.

Witnesses told police that a male suspect approached the crowd and opened fire. Family and friends have held vigils and rallies calling for answers.

What information about that night or the suspect would help investigators identify the shooter?