CNN CNN Newsroom April 20, 2013 17:22:00
Moment in time this could have been stopped. it seems obvious now, but we have to see what was determined and what did they determine at that time. >> very quickly, what are investigators, how are they trying to figure out motive? they didn't leave a message behind. >> motive is the hardest thing. we want to know why. was it the fact he couldn't get -- this is all based on reports right now and i'm a keen believer that what we know about them today will likely modify. even a week later sometimes things get unearthed. was it the fact the older brother couldn't get citizenship here. was it isola...