Chris Watts, 33, was arrested Wednesday for allegedly killing his pregnant wife and two daughters.
Bartley Teal and Jaime Sarrantonio were killed early Friday in Nashville.
Kiera Bergman, 19, hasn't been seen since August 4.
Extreme-right demonstrators started gathering for a "Liberty or Death" rally.
The man and his wife had stopped at a gas station where he was detained.
More details around the police shooting of a black man in Chicago emerged after authorities released never-before-seen video Thursday.
A prominent New York University professor who's being sued by a former student who accuses her of sexual harassment says that her relationship with him was not sexual and that affectionate emails they exchanged were just "gay-coded" correspondence
New court documents suggest within weeks of a south Georgia teacher's disappearance, two of her former students told friends at a party they had killed Tara Grinstead and burned her body
Trump and Omarosa have now hit a low point after the tapes and her new book.
"Baby!" The woman's two-syllable howl of terror and anguish cut through the line even before the 911 operator had begun to speak.