"Our primary purpose today was to release a composite sketch of a person who was in the area at the time of the bombing, and appeared to have some involvement, as he carried something down the alley just prior to the bombing and returned to his truck empty-handed at the time of the explosion," said Thomas Ravenelle, FBI Denver's special agent in charge.
Investigators announced that the Colorado Springs Police Department
would provide additional patrols in the area of the explosion, which occurred at 603 El Paso Street late Tuesday morning.
Authorities also announced a $10,000 reward for information leading to an arrest in the case.
They have not received many tips, Ravenelle
"Even the smallest tip can make or break the investigation," he
Authorities released the sketch of a balding white man in his
40s who witnesses say was driving a dirty 2000 or older-model white pickup truck with a covered or missing license plate.
said it would be impossible to say whether the man was in Colorado Springs.
Earlier Friday afternoon, the Colorado State Patrol spotted a truck matching the description and passed the information along to Colorado Springs police, though police said they had not made an arrest.
Two volunteers with the NAACP
office told the New York Times
that several weeks ago an angry man had walked into their offices and delivered a disjointed tirade about how the NAACP
was not supporting his
personal protest against local law enforcement.
referenced the incident at Friday's
conference, saying they were looking to speak with the individual.
would not say whether the person matched the suspect's description.
Authorities aren't saying if the civil rights organization, which has been active in Colorado Springs for decades, was the target.
did say authorities would be naive to ignore the fact that the NAACP
, as a national organization, has "been a recipient of threats throughout their existence."
"I know what the NAACP
means to some extremists in this country, so we keep all possibilities open," he
Questions remained about the bomb, which authorities refrained from discussing so as not to encourage potential copy cats.
It was "not a sophisticated device," Ravenelle
would not speculate about the potential power of the explosive and also did not have information about the blast radius.
No one was injured in the explosion, which knocked over items on shelves inside the building and left scorch marks on the exterior of the wall and scattered bits of evidence in nearby lawns and on the street.
Pictures taken by Google Maps in September show an older, dark mark on the northeast wall of the building next to where the bomb exploded.
said it's not something they are looking into.
"Here's the thing, whether there was a charred mark there before, whether there's a new charred mark there that's a little bit larger, the bottom line is, somebody placed a bomb outside the facility, with the intent of doing something nefarious," he
While acknowledging intent, investigators did not say it was an act of domestic terrorism or a hate crime.
"If we were to say this was a hate crime, or this was a terrorism incident, we could find out that somebody was upset with the owner of Mr. G's
for some reason," Ravenelle