Johnson was hastily sworn in as the 17th president on April 15, and served for the remainder of Lincoln's second term. Lincoln's state funeral was held on April 19, after which a funeral train transported his remains through seven states for burial in Illinois. He was the third US president to die in office, and the first by assassination. The assassination received international condemnation and left a profound impact, making Lincoln a national martyr and leading to a lengthy period of national mourning as the US entered the Reconstruction era.