Dear Helpless
I am so sorry for this latest going-on. I don't think there are more words that will help. I agree with ksm. I am praying with you that he will be found and contained. It seems that he is on a rampage that he does not know how to stop. I don't know why he doesn't turn himself in, but it seems it's beyond him at this point. He seems to be cornering himself so that he will be found and stopped. On some level he must know this would be for the best.
When he next contacts you maybe you can focus on helping him find a way to stop and to go somewhere safe where he can turn himself in. To support him to find the place inside of him where he knows that he can be protected from his worst instincts. I don't think this is the time to be right. It's the place of unconditional love. If he can find that in himself, he may be able to stop and help himself.
Could you call the PO and ask her advice on how to talk him down, talk him down to a place where he can stop running? He is acting like a reactive, scared animal. All of us know this place. Maybe she can help you. Meanwhile, we're all praying with you.
Love, Copa