By Canadian Press Video from police cruisers has revealed new details about a shooting by officers that resulted in the death of a 15-year-old boy south of Edmonton. “The officer’s in-car video system captured both audio and video of the interaction,” said the Alberta Serious Incident Response Team, which released a description of the video Thursday. The boy died early Friday in Wetaskiwin, Alta., after first calling police for help, saying he was being threatened. The police watchdog said a single officer located the boy, since identified as Hoss Lightning of Samson Cree Nation. “The youth and the officer spoke about the situation and the youth handed over a machete and knife,” the watchdog said in a release. It said the officer decided the teen was at risk and tried…