Active members of the military, veterans and civilians march to pay tribute to the victims and families affected by the Fort Hood shooting, April 4, 2014, in Killeen, Texas.
Tamir Kalifa/AP

Obama to attend Ft. Hood memorial

President Obama will attend a memorial Wednesday for the victims of the shooting rampage at Fort Hood, Texas, White House Senior Adviser Dan Pfeiffer confirmed on CBS’s Face the Nation Sunday.

A Fort Hood spokesman confirms there will be a remembrance ceremony that day.

Investigators say that an Army truck driver, Ivan Lopez, had an argument before opening fire last Wednesday, killing three soldiers and wounding 16 others before taking his own life. Lopez spent four months driving a truck in Iraq in 2011 and was undergoing treatment for depression and anxiety, though showed no signs of violence, military officials said. 

The shooting is the latest in a long string of tragedies that have hit American military posts and the second mass shooting at Fort Hood. In 2009, Hassan shot and killed 13 people and wounded more than 30 others. He was convicted and received a death sentence. Just last year, another lone gunman opened fire at Washington’s Navy Yard, killing 12.

The Reid Report, 4/4/14, 3:15 PM ET

Officials look for answers after Fort Hood shooting

The shooting at Fort Hood continues to raise questions about mental health. NBC’s Stephanie Gosk reports on what is known about the suspect and NBC’s Charles Hadlock reports on the investigation. Then Gabby Giffords’ former chief of staff joins Joy…

Obama to attend Ft. Hood memorial