"He does do a lot of experiments. A lot of them I don't fully understand, but I'm certain he's not making bombs," said the suspect's father, Allen Mason"
Oh? How are you so certain? You just said you don't know what he's doing. Ergo, you don't know what he's doing.
I know, I know... Slashdotters will all side with the "experimenter", because geek. But it sounds like the police are acting based on evidence, while the defense is acting based on blind faith. In such cases, I side with evidence.