Parents, teachers, classmates and community members lit candles, prayed and shared memories during a candlelight vigil for a mother and three children who were fatally shot at their home in Virginia last week. Authorities said JoAnna Cottle called police just before 5 a.m. Friday to report an intruder in her home south of Richmond. When police arrived, they found the bodies of Cottle and her children, 13-year-old Kaelyn Parson, and 4-year-old twins, Kinsey and Jayson Cottle. Police said the investigation led to Cottle’s former boyfriend, Jonah Adams, the father of Kinsey and Jayson Cottle. He was arrested near his home in Waldorf, Maryland, nine hours after the killings. A motive is unclear.