Kennetha Purnell and her two children, 11-year-old Morgan and 13-year-old Matthew Nichols, had moved into the house with the help of the children's father, Michael Nichols, on Saturday night. Purnell and the children were found in their beds, authorities said. Nichols' body was slumped in an upstairs hallway, Merrillville Police Cmdr. Jeff Rice said. The generator was out of gas when police arrived.