led officers on a ang his alleged 8-year-old ali, a worker at a mattress store and 62-year-old pamela johnson, who police found dead in her home on friday. another mattress store employee, edward maganya who was shot and killed. >> he was an outgoing guy, funny, very out going. >> reporter: his sons describe their dad as hard working and say they're devastated. >> value the people you love because you never know when they will be gone. >> reporter: so far, investigators don't have a motive for the killings. gabe gutierrez, nbc news. >>> back in the headlines tonight, the las vegas mass shooting, a terrifying night when a gunman fired onto a music festival crowd from the 32nd floor of the mandalay bay hotel last october. now the hotel's owner, mgm, has angered more than a thousand victims by filing lawsuits xplains why. in modern american history, stephen paddock amassed an arsenal at the mandalay bay hel vegas, making multiple trips carrying 20 plus pieces of luggage and 22 rifles into his suite. people and wound more than 500 others. now, mgm, the owner of mandalay bay, which faces over 1,00