Obama: Bombings 'Heinous' 'Act Of Terror' "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. Anytime 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 act by a terrorist organization -- foreign or domestic -- or was the act a malevolent individual? That's what we don't yet know. Clearly we are at the beginning of our investigation. It will take time to follow every lead and to determine what happened. But we will find out. We will find whoever harmed our citizens and we will bring them to justice."