Obama To Attend Memorial Service For Navy Yard Shooting Victims

President Barack Obama will attend a memorial service on Sunday for victims of the Navy Yard shooting.

Twelve people were killed Monday by 34-year-old Aaron Alexis, who died during a gun battle with police. Fourteen others were wounded in the attack.

Speaking hours the shooting at the Washington Navy Yard on Monday, Obama called the incident a "cowardly act" that would be swiftly and "thoroughly" investigated.

"We still don’t know all the facts, but we do know that several people have been shot and some have been killed," he said. "So we are confronting yet another mass shooting and today it happened on a military installation in our nation's capital."

"These are men and women who were going to work, doing their job, protecting all of us," Obama said. "They are patriots and they know the dangers of serving abroad, but today they faced unimaginable violence that they wouldn’t have expected here at home."

According to the AP, White House spokesman Jay Carney said Obama wants to mourn the loss of the victims and share in the nation's pain in the aftermath of another mass shooting.

This post has been updated.