First Photos of Alleged Fort Hood Gunman Surface

These are the first photos out of the alleged gunman who killed three people and wounded 16 others at Fort Hood on Wednesday before turning his weapon on himself.

PHOTO: Alleged Fort Hood gunman Ivan Lopez pic.twitter.com/cUunxuI1Dt

— NBC Nightly News (@nbcnightlynews) April 3, 2014

Photos, details about Fort Hood gunman surface: https://t.co/khI7m4HASx pic.twitter.com/t4aMXjT4T6

— CBS News (@CBSNews) April 3, 2014

House Homeland Security Committee Chairman Michael McCaul (R-Texas) named Ivan Lopez as the shooter who opened fire on the Texas base, the second mass shooting there in less than five years. The Army has not formally identified him.

Army Secretary John McHugh said Lopez was deployed to Iraq for four months in 2011 as a truck driver, but saw no combat. Lopez saw a psychiatrist las month and showed no "sign of any likely violence either to himself or others," McHugh said.

McHugh said the soldier was prescribed Ambien to treat a sleeping problem.

Lopez had just arrived at Fort Hood in February. A neighbor, 71-year-old Suzie Miller, told the Associated Press that Lopez and his wife just moved into their apartment complex in Killeen, Texas, a few weeks ago. He lived with his wife and young daughter, ABC News reported.

Image source: Daily Mail

Born in Puerto Rico, Lopez apparently maintained a Facebook account under the name "Ivan Slipknot," according to ABC, like the heavy metal band, which his page featured photos of. Other Facebook photos showed Lopez posing with children and smiling.

Investigators searched Lopez's home Thursday and questioned his wife, a Fort Hood spokesman told the AP.

Neighbor Xanderia Morris told ABC that Lopez's wife appeared distraught outside as word of the shooting spread Wednesday.

"She told me that she hasn't talked to [her husband] since 3 o'clock and was hysterical," Morris told ABC. "She was shaking and crying."

Morris said Lopez seemed like a regular devoted husband and father.

"He was always smiling and waving whenever I saw him, so I didn't think anything strange or unusual," she said.

On Thursday, the Killeen Daily Herald reported that a photo it published Wednesday night was not of the shooter.

The Associated Press contributed to this report.