ATLANTA—A man accused of killing eight people at Atlanta area massage businesses who has already pleaded guilty in four of those killings appeared briefly in court Monday, but he did not enter a plea in the other four slayings. Robert Aaron Long, 22, is accused of shooting four people to death at a massage business and shooting and wounding a fifth person in Cherokee County on March 16, and then killing four more people at two massage businesses in Atlanta. Six of the eight slain victims were women of Asian descent. Long was scheduled to be arraigned Monday in Fulton County Superior Court on charges including murder, aggravated assault, and domestic terrorism in the Atlanta killings. Fulton County District Attorney Fani Willis has filed notice that she intends to seek the death penalty, as well as a sentencing enhancement under Georgia’s new hate crimes law. The judge went through some …