Alton Sterling shooting:

Baton Rouge, Louisiana (CNN) A homeless man made the 911 call that brought police to the convenience store where Alton Sterling was shot dead, a source with knowledge of the investigation told CNN on Thursday. Sterling was selling CDs early Tuesday outside the Triple S Food Mart in Baton Rouge, the source said, when the homeless man approached him and asked for money. The man was persistent, and Sterling showed him his gun, the source said. "I told you to leave me alone," Sterling told the man, according to the source The homeless man then used his cell phone to call 911, the source said. http://www.cnn.com/2016/07/07/us/baton-rouge-alton-sterling-shooting/

The details about the 911 call shed new light into the Baton Rouge police's high-profile fatal shooting of Sterling, a 37-year-old black man. A graphic cell phone video of the shooting was shared widely on social media, quickly sparking local protests and drawing national attention. Federal authorities have taken charge of the investigation. Sterling was shot outside the Baton Rouge convenience store after an encounter with two police officers. The officers can be seen in the video on top of him before shots were fired. Vigils and memorials have spread across the country in reaction to the deadly shooting. Local civic leaders and Sterling's loved ones have promised to find out what happened. "I, for one, will not rest," Quinyetta McMillon, the mother of one of Sterling's children, said Wednesday, "and will not allow ya'll to sweep him in the dirt." The 15-year-old son of her and Sterling stood by his mother's side, sobbing.