Police spokesman Sgt Kendale Adams says the teenager is being held today on preliminary murder charges at Indianapolis' juvenile detention center.
Adams tells The Indianapolis Star that detectives believe the boy fatally shot 25-year-old Dominique Miller, 25-year-old Jordan Wright and 19-year-old Justin Crowder on Sunday night during a robbery involving illegal drugs.
The men were pronounced dead at the scene. Adams says the juvenile suspect does not live at that apartment complex.