UK & World News
Fort Hood Shooting After 'Escalating Argument'
A soldier who shot dead three colleagues at an US Army base had been involved in an "escalating argument" before the attack.
The senior officer at Fort Hood said Ivan Lopez had an altercation with fellow soldiers in his unit on the day of the shooting.
Lieutenant General Mark Milley also said the 34-year-old's mental condition was not the "direct precipitating factor" in the attack.
The three soldiers Lopez shot dead before turning the gun on himself have been identified as 39-year-old Daniel Ferguson, 38-year-old Carlos Rodriguez and 37-year-old Timothy Owens.
All three victims had served in Iraq and Kuwait, while Mr Ferguson had also been deployed to Afghanistan.
Details about what happened before the shooting came after it emerged Lopez bought the .45-caliber pistol he used in the rampage at a gun shop linked to a previous atrocity at the Texan base.
The soldier, who had sought help for depression and anxiety, purchased the weapon at Guns Galore, a small store on the main road leading to Fort Hood.
The same shop sold a semi-automatic pistol, laser sights and high-capacity magazines to Nidal Hasan, who killed 13 people and wounded more than 30 others at the base in 2009.
Federal law generally prohibits the sale of guns to people who have been involuntarily committed to a mental health facility or have been ruled by a court to be a danger to themselves or others.
Gun control advocates say that leaves a gaping loophole during computer background checks.
Officials said Lopez, whose medical history suggests he had unstable psychiatric and psychological conditions, had a "clean record".
The soldier, originally from Puerto Rico, joined the military in 2008 and had served abroad twice, including four months in Iraq in 2011.
He had no direct involvement in combat and had not been wounded.