DES MOINES, Iowa (AP) — Two teenage students were killed and a man was seriously injured in what police called a targeted shooting at an alternative educational program for at-risk youth in Des Moines. Police said Monday that an 18-year-old man has been charged with murder and that the shooting was “definitely targeted.” Preston Walls is charged with two counts of murder and one count of attempted murder in the Monday shooting at Starts Right Here. Two teenagers — an 18-year-old male and a 16-year-old male — were killed in the attack. The program’s founder, 49-year-old William Holmes — who goes by the stage name Will Keeps — was injured. Police say Walls and the two students had gang affiliations and were in opposing gangs.