Within hours of Wednesday’s assault, investigators started looking into whether Lopez had lingering psychological trauma from his time in Iraq. Milley said the shooter had sought help for depression, anxiety and other problems, and was taking medication.
Among the possibilities investigators were exploring was whether a fight or argument on the base triggered the attack.
Investigators searched the soldier’s home yesterday and questioned his wife, Fort Hood spokesman Chris Haug said.
Lopez apparently walked into a building Wednesday and began firing a .45-caliber semi-automatic pistol. He then got into a vehicle and continued firing before entering another building. He was eventually confronted by military police in a parking lot, according to Milley.
As he came within 20 feet of a police officer, the gunman put his hands up but then reached under his jacket and pulled out his gun. The officer drew her own weapon, and the suspect put his gun to his head and pulled the trigger a final time, Milley said.
Lopez grew up in Guayanilla, a town of fewer than 10,000 people on the southwestern coast of Puerto Rico, with a mother who was a nurse at a public clinic and a father who did maintenance for an electric utility company.
Glidden Lopez Torres, who said he was a friend speaking for the family, said Lopez’s mother died of a heart attack in November.
The soldier was upset that he was granted only a 24-hour leave to attend her funeral, which was delayed for nearly a week so he could be there, the spokesman said. The leave was then extended to two days.
Lopez joined the island’s National Guard in 1999 and served on a yearlong peacekeeping mission in Egypt’s Sinai Peninsula in the mid-2000s. He enlisted with the Army in 2008, McHugh said.