This is tragic for her and her family. I would be devastated to know what has happened and that my husband died at the hands of infedelity!!! The wife is very capable of either having done this herself or having someone do it for her. It happens every day. Watch CNN or A&E. It doesn't matter that she has kids, blah blah. Her husband was going to leave her for a 20 year old. To some that's enough to kill.
But you also have the theory of the exboyfriend. ??
You can't rule anyone out at this time. There are 3 very possible suspects and three very possible motives!

There are no documents that he filed for a divorce nor did his wife, yet there home is up for sale for $3 million. The wife has to know about that. I'm married and I would see the signs of some sort of infidelity going on. You can't convince me that the wife simply thought her handsome, famous husband who has retired and who is obviously gone alot of the time( because he was out with his 20 year old girlfriend ) was just out lollygaggin. YEA RIGHT!!! Why haven't we heard any thing from the investigation that says the Wife had an alliby as to where she was. So far she does not want to comment ?... .

There are a few scenarios that could be in this case. The most obvious is the girlfriend shot him b/c he wasn't going to leave his wife. But I would say that you can not rule out the Wife as a suspect just yet. How is it that he had this condo only 6 miles from his home with his wife and kids, where mind you he takes his girlfriend obviously and the wife doesn't know. He buys a vechicle for his girlfriend, the wife never finds out about this other vehicle as much as he is known in the community. He is able to be seen numerous times by kazemi's neighbors so much that he is thought to have been living with her, and the wife doesn't have a clue. TMZ is able to have taken photos of him on trips with his girlfriend and there is word that they went on various trips together numerous times, but yet the wife never knows. I think this is too odd, dont you ???