Via AFP:
A troubled US soldier who shot dead three people and wounded 16 more at Fort Hood may have argued with one or more colleagues before his rampage, his base commander said.
Lieutenant General Mark Milley told reporters that investigators were combing through the records of the gunman, Army specialist Ivan Lopez, to determine his mental state before Wednesday's incident, which ended when he fatally shot himself.
"We're trying to figure out what the trigger event was," Milley told a press conference Thursday at the sprawling Texas base, which is home to 70,000 people including more than 40...
