killers. >> leyla, what are authorities saying as a possible motive? >> reporter: this morning authorities said this was something that stepped from an on going rivalry between two groups, even said there was a back and forth on social media and even called this a targeted shooting. now that they have that suv, obviously, that is a key piece of evidence that will help them sort of piece together the puzzle, anderson. today, they talked about some of their greatest challenges and even their fears. among the challenges for investigator investigators, they said the code of silence. they need more help from the community in getting more information. that's why you heard the appeal from the mayor saying please give us information, even anonymously. as for what their greatest fear is, they fear if they don't get to the bottom of this quickly, we may see retaliation. >> you heard a bit from the mayor in leyla's report. mayor, thank you for being with