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HIGHLANDS RANCH, Colo. — An investigation is underway at a high school in Highlands Ranch after what some people are describing as racist graffiti was discovered on a campus wall.

The word and drawing at Mountain Vista High School have some people concerned and asking questions. The term is a combination of the N-word word and igloo.

Karl Coleman, the first-year freshman football coach, believes the graffiti at the predominantly white high school was directed toward himself and four other African American coaches.

“It is unfortunate that this happened,” a Douglas County School District spokesman said. “Because this could cause concern among our community, immediate steps were taken to cover the graffiti and begin the removal process.

“Mountain Vista High School and the Douglas County School District take this seriously and we are working with the Douglas County Sheriff’s Office to pursue any leads to identify those responsible.”

Coleman says more should have been done.

“No letters, no notes or anything like that went out to their parents that this incident had happened,” he said. “Nothing was said to us directly or we were not brought in to say hey we see this word what is your perspective on it. None of that was happening.”

The Anti-Defamation League says the incident can be used to teach students that words matter.

The district said there are no surveillance cameras focusing on the wall. Others are being checked to see if they captured the culprit.

The district is still investigating and trying to decide if any other actions should be taken. The sheriff’s office said there is no suspect.