President Obama will travel to Boston for a memorial on Thursday. At the White House, Obama called the bombings an “act of terror.”

President Obama: “This was a heinous and cowardly act. And given what we now know about what took place, the FBI is investigating it as an act of terrorism. Any time bombs are used to target innocent civilians, it is an act of terror. What we don’t yet know, however, is who carried out this attack or why, whether it was planned and executed by a terrorist organization, foreign or domestic, or was the act of a malevolent individual. That’s what we don’t yet know.”