Not any US news sources.
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Lots of US sources have had this story this morning and last night.
http://www.foxnews.com/us/2011/12/26/police-say-gunman-in-texas-murder-suicide-dressed-as-santa/
http://abcnews.go.com/US/wireStory/texas-police-man-santa-suit-killed-relatives-15237643
http://abcnews.go.com/US/wireStory/texas-police-man-santa-suit-killed-relatives-15237643
http://www.usatoday.com/news/nation/story/2011-12-25/texas-shooting/52223128/1
Actually, what I was saying is that no US news sources was mentioning the Iranian/Muslim connection.