A key witness for the prosecution in Amber Guyger's murder trial was shot and killed days after the former Dallas cop was convicted and sentenced—but the city's mayor has a simple request for anyone whose mind is in overdrive right now: "Refrain from speculation." Those were the words from Mayor Eric Johnson on Twitter, where he assured residents that the police department would "conduct a thorough investigation" into Joshua Brown's death and asked anyone with information to come forward: "Dallas will never be a city that tolerates acts of violence such as this." Guyger was on Wednesday sentenced to 10 years for fatally shooting Botham Jean in his apartment after she mistook it for her own home. More of the latest:
- Police chief U. Renee Hall so far has no suspects in Brown's murder, the Guardian reports, and she says police have not yet established a motive. Brown lived in the same apartment complex as Guyger and Jean, but was killed late Friday in the parking lot of a different complex to which he had moved about three months after Jean was killed. Jean family lawyer S. Lee Merritt said on Instagram that Brown, 28, "was ambushed at his apartment complex as he got out of his car and shot at close range. His mother asked that I do whatever it takes to get to the bottom of his murder. She suspects foul play and it is difficult to rule it out. He had no known enemies. He worked for a living. He was not in the streets. We need answers."