Christopher Guajardo, 26, was found shot to death in the parking lot of a McDonald’s in Irving, Texas, on August 4, 2014, at about 1 a.m. Irving police responded and opened an investigation after multiple suspects were seen fleeing the scene.

Investigators pursued leads and worked with other agencies, but the case ran into obstacles: witness testimony proved difficult to obtain and the police did not immediately make any arrests. The lack of concrete evidence tying individuals to the shooting stretched the inquiry into a prolonged investigation, prompting ongoing appeals from Guajardo’s family and the community for information.

Does anyone who was in that McDonald’s parking lot that night or who has information about people seen leaving the scene want to come forward?