Way back in 2009 at the depth of the financial crisis,we had a similar mystery visit of a Swat team to our neighborhood. All the neighbors wanted to know what was up, but the police refused to tell us. Then a few hours later, we had a knock on our door. One of the police officers was requesting to use our bathroom. I said: "Sure, no problem ... as long as you tell us what is going on." It turns out that someone about six houses away from us was threatening to commit suicide and kill the rest of their family. Yikes!
So, no word from the OP?