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Signs of argument before Fort Hood shooting: Commander

Published on Apr 4, 2014 6:33 AM
United States soldier Ivan Lopez is pictured in the Sinai Peninsula between 2007 and 2008 during his service with the 295th Infantry of the Puerto Rico National Guard in this undated handout photo by PR National Guard obtained by Reuters, April 3, 2014. -- PHOTO: REUTERS/PUERTO RICO NATIONAL GUARD

WASHINGTON (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 on Thursday.

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 at the sprawling Texas base, which is home to 70,000 people including more than 40,000 military personnel.

"There may have been a verbal altercation" with one or more soldiers immediately before the 34-year-old opened fire, he said.

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