There doesn't appear to be much else they can do unless someone recognizes the man seen leaving the area just before the detonator exploded.
Officials released a composite sketch Friday of a person of interest in the bombing of a building that houses a chapter of the NAACP, saying their investigation is still in its early stages and very much ongoing.
The FBI would not speculate about a motive in Tuesday's bombing, reiterating earlier proclamations that they are exploring all possibilities in why someone appears to have targeted an unassuming, one-story red building in a neighborhood south of downtown.
"I'm not going to be naive, I know what the NAACP means to some extremists in this country," FBI Special Agent in Charge Thomas Ravenelle, the only official to speak at Friday's media briefing, said.
The sketch is of a balding white man about 40 seen dropping something off and leaving the scene just before the device went off, officials said. Federal law enforcement is offering a $10,000 reward for anyone with information leading to an arrest (call: 303-425-7787).
Officials said they believe only one person was responsible for the apparent attack.
I'm glad they're not being naive, because it's not a huge leap to assume an IED was there because someone was offended at the presence of a civil rights organization in their nice tidy neighborhood.
Tonight, all of the news channels will be talking about the Paris tragedy and the ultimate outcome. There will be much discussion about Muslims, terrorism, and how afraid we all should be of people in faraway places who find their way to other faraway places and do harm to others.
It's worthy of attention. But not if they choose to ignore the people in places close to home who dream of doing harm to friends, neighbors and others, because liberty. Domestic terrorists will wreak more havoc this year than foreign ones will. Mark my words.
