We actually had an octogenarian here in the States just get charged for doing something almost exactly like this. Two people, guy and woman, and the woman was pregnant. He waited in the garage, where they broke in last time, waited in the dark, shot them while they were running away and the pregnant woman was so alive pleading for her and her unborn’s life when he shot her again. He freely admitted this and was not arrested at first until public outcry, which should have been completely unnecessary given the confession. Cops in America are a special breed of stupid.

Edit: we are so fucked. This actually happened in LA California, and he was never arrested. Happened in 2015