Didn't listen

From The New York Times, an article about Rahami by Marc Santora, Pir Zubair Shah, Joseph Goldstein, and Adam Goldman:

 

'Keep an eye on him,' Ahmad Khan Rahami's father told the FBI:
In interviews, Mohammad Rahami said he warned agents about his son's interest in terrorist organizations and his admiration of a leading al-Qaeda propagandist.

 

Rico says you can tell 'em, but you can't make 'em investigate until it's too late...