WASHINGTON — Two more Americans have been identified as killed in the attacks on Brussels, the State Department confirmed Sunday, bringing to four the total number of U.S. citizens confirmed as victims.

The State Department said, “We express our deepest condolences” to those who lost loved ones in the attack, but declined to identify them publicly.

Officials have said previously at least a dozen Americans were injured.

Earlier Sunday, the White House said President Barack Obama telephoned the parents of an American couple identified as among the dead.

The White House said Obama offered his condolences and praised Justin and Stephanie Shults as epitomizing all that was good about America.