Kai Williams is accused of murdering his ex-girlfriend, Liberty High School student Larissa Barros in Poinciana, Florida. He then shot himself.
Souleymane Porgo, an African street vendor in New York, was beat on video. Police were seeking Enrique Foote and William Burgess in the crime.
See photos remembering the lives of Boston doctors Lina Bolanos and Richard Field, who were murdered in a condo. Bampumim Teixeira is accused in the crime.
Roy Oliver has been identified as the Balch Springs, Texas, police officer who fatally shot 15-year-old Jordan Edwards. The officer has been fired.
At least one Dallas paramedic was shot and injured on Monday by a suspect. Police are undergoing a manhunt for the suspect. Watch a live stream of the coverage.
Serena McKay, a teenager from Canada, was murdered, and police are investigating allegations the death was streamed on Facebook Live.