Video shows teen moments after he allegedly murdered his grandmother 10/15/2015 8:53 am PDT Comments WHO via WHO: DES MOINES, Iowa -- (WHO) -- Newly released gas station surveillance video shows the crazed moments after police say a Des Moines teen murdered his grandmother. "It is hard to watch,? said Maria Munoz. Munoz is the cousin of 17–year– old Noah Laprei. Laprei is accused in the brutal killing of 79–year-old Rachel Pray inside her Eastside home. After allegedly doing so, Laprei ransacked a nearby Git N Go, on East 29th Street and assaulted its patrons. Munoz said his actions must have been fueled by drugs. FULL STORY: Video shows teen moments after he allegedly murdered his grandmother - WHO Waiting for your permission to load facebook comments.