Anyone remember memory holed orphan brother and sis kids shoot out with cops?

Anybody remember those two kids, brother and sister, that ran away from an orphanage straight to this house, knew where the guns were and got the guns, cops go on a search for the missing kids and somehow know exactly where they went to? I remember watching the bodycam video of the cops talking to the kids and they did not want to go back to that orphanage and were really upset. Then the cops shot the kids? What happened there? Who owned that house they went to and why did they go there? How did they know there were guns in that house? What happened to all that?