I have an American mate whose private students are all Koreans and Christians, in Thailand. His Wednesday tutoring session was cancelled, he thinks because the local Korean community held an emergency meeting. But by 28 hours later, he says the families were acting normal. And, they are not bringing up the topic with Americans.
He has prepared himself to respond, if the subject comes up with his students' families, to say "That man who killed those people was not a Christian. He had a demon in him. And, he was more American than Korean now. He was crazy, and we know that Korean Christians do not kill people."