Motive for Florida family's massacre may never be known

Investigators say that when they captured Marine veteran Bryan Riley outside the Lakeland, Florida, home where he allegedly killed a couple, their 3-month-old son and the boy’s grandmother, he told them, “You know why I did this.” But they say they don’t

Authorities puzzle over motive for German knife attack

The suspect in a knife attack in southern Germany that left three women dead was ordered kept in custody Saturday on suspicion of murder, while authorities puzzled over a possible motive, examining his mental health and seeking to determine whether he was

Authorities puzzle over motive for German knife attack

The suspect in a knife attack in southern Germany that left three women dead was ordered kept in custody Saturday on suspicion of murder, while authorities puzzled over a possible motive, examining his mental health and seeking to determine whether he was