The U.S. Army specialist who shot and killed three soldiers last year at Ft. Hood, Texas, before taking his own life showed "no clear warning signs" that he might commit a violent act before the April attack, according to a report made public on Friday.
Investigators determined that no single event led to the shooting, according to the report.
They said that nothing in Spc. Ivan Lopez's medical or military background could have allowed commanding officers to prevent the deadly shooting, according to a U.S. Army statement.
The Army interviewed 169 witnesses during the investigation and determined Lopez had experienced emotional trauma in the months leading up to...