A 40-year-old white man is accused of using a racial slur and encouraging his pit bull to attack an African-American man.

PORTLAND, Ore. – A 40-year-old white man is accused of using a racial slur and encouraging his pit bull to attack an African-American man.

According to court documents filed in Multnomah County, Mathu Dwain Karcher is accused of following an African-American man who had just gotten off a city bus. The man told Karcher, who was walking with his pit bull, that he was uncomfortable with Karcher's pit bull walking so closely behind him. According to an affidavit, the pit bull was directly behind the man while Karcher “was still several yards away.”

In response, Karcher told his pit bull to “Get 'em!” The man perceived Karcher's order as a threat, but he was unable to run away due to a prior leg injury, the affidavit said.

Despite the command, the pit bull did not attack the man. At that point, the man told police Karcher said “something to the effect of, ‘N****r, you’re in the wrong neighborhood!’”

The man then walked to a nearby Plaid Pantry when Karcher allegedly told him that "that if his dog was not willing to get him that he would kick [his] ass," according to the affidavit. The man then entered the Plaid Pantry, where he and a store employee said Karcher followed him inside and continued making threats.

The store employee asked Karcher to leave, which he did. Police were then called to the Plaid Pantry. While being interviewed by police, the employee noticed Karcher outside the store again and pointed him out to officers.