The Austin Police Department has released additional surveillance video from the fatal officer-involved shooting of 17-year-old Anthoneil Williams II, saying the footage provides new context for the July 24 encounter. According to APD, officers arrived within minutes and encountered Williams near a playground. Investigators say newly obtained surveillance footage shows Williams walking to the park before officers arrived and sitting on a low wall for several minutes. APD also said investigators later determined the original 911 call reporting a person with a gun was placed from Williams’ own cellphone. The footage supplements body camera video, 911 audio and police radio traffic that were released last week.