enforcement officials who told cnn it does not appear there are any indications that there is somebody outside, a terror network or individual, who intentionally may have given money to farook and malik in order to finance the terror plot. but, as you mentioned, the finances are still something they're digging into so they haven't drawn any conclusions just yet. >> but they are looking very closely at a former neighbor, right, a former neighbor of the male shooter a man named enrique marquez. why are they still so interested in him? >> reporter: well, he, again, is the person who they've now tracked a couple of the weapons to. he purchased two ar-15s that were used in the attack. what we've learned about enrique marquez is he used to be the next-door neighbor to the farook family. in fact, we were out in that neighborhood yesterday talking with neighbors who say that they did see farook and marquez working together on cars in farook's family garage. now, marquez apparently has been talking to investigators even though he initially checked