Chad Carrasco, 35, was shot and killed on December 23, 2012, on Chicago’s West Side near the 3500 block of West Lake Street. He was shot in the back of the head; authorities suggested the shooting might be connected to gang-related activity but no definitive motive was confirmed.

Carrasco had reported affiliations with the Wheels of Soul Motorcycle Club, a group that had been linked to violent incidents in the past. Family members criticized media speculation about his life, saying he could be involved in high-risk activity yet was also remembered for kindness and helping others. His death came during a year of sharply increased homicides in Chicago.

Was anyone in the area that night or with information about Carrasco’s movements willing to come forward?