Lavon Walker, 30, a Brooklyn community activist and outreach supervisor for Save Our Streets in Crown Heights, was shot twice outside the News Cafe on Ocean Drive in Miami Beach at about 7 a.m. on October 9, 2016. He was taken to Jackson Memorial Hospital and later died of his injuries. Walker had once been involved in crime but had turned his life around and became known for mediating conflicts and mentoring young people; colleagues remembered him as a passionate advocate against gun violence, a loving father and husband.

Miami Beach police say the shooting was not random. Surveillance video shows a white Jeep Cherokee speeding away with three people inside, and those three were identified as suspects, but no arrests have been made and the motive remains unclear. A reward is being offered for information that could lead to their apprehension.

If anyone has information about the white Jeep Cherokee, the people seen leaving the scene, or Walker’s last movements in Miami Beach, please come forward.