Freeper Candor 7 explains the visitor in this comment:
“...The man who visited Hasan that morning gave him his last rites...”
http://www.freerepublic.com/focus/news/2381534/posts?page=29#29
I found the description I was thinking of, from the UK-telegraph article. “”It was very unusual because he had never had anyone round before. His visitor had long black hair and a moustache and a dark complexion. He stayed about five minutes and then left. We’d never seen him before.”
And perhaps not last rites as we know them, but the final words of a secret esoteric prayer so that he could complete his ritual genocide of those he killed.
The man who Hasan met that morning stayed 5 minutes according to reports. He was a preceptor from the Mujihad.
Demon possessed...