I don't know.
Because 3 of the deceased were children, the police rightfully kept a tight lid on any information released (a fourth child survived in critical condition, 3 year old kid, unsure of the outcome on her).
So there's very little information beyond the initial reports. I *did* hear they had a person of interest, but have heard nothing more beyond that, and do not know if any arrests were made.
The incident made me re-evaluate my situation here, however. At that point in time, having five children I kept only one firearm loaded, upstairs next to the bed. However, we live in a 5 level house - so if I were in the basement, and a bad guy kicked in the front door, I would have 80 linear feet to travel, plus 26 stairs to climb (PAST the bad guy no less), to get to a firearm.
I've redoubled my training of my children. Three of them can use handguns now and can do so very proficiently. The two smaller girls have been taught NOT to touch firearms under any conditions - their job is to go hide, and they have specific places to DO so so I know where they are at (this gives me clear fields of fire). The older children are trained never to touch a firearm UNLESS someone enters the house and is a direct threat. They can go NEAR the firearms if they are scared (e.g., someone knocks while my wife and I are both away), but not to handle them unless it's necessary.
There is one loaded weapon on each level of the house now and they are situated so they are not close to the doors. This way if someone charges in, they can't close the gap between the firearm and us, before we have a chance to get to it.
Between the five of us who know how to shoot here, and the specific
types of weapons I have, we very seriously out-gun the local police department that's 10 miles away - which recently hired an additional full time officer, so now they have a whole THREE cops available.
So, no need to wait around 20 minutes for help to arrive. We can handle ourselves.