CHAPEL HILL, N.C. » Neighbors knew Craig Stephen Hicks. He was the angry man on Summerwalk Circle, they said – irritated about noise, irascible about parking, hostile to religion. And armed.

Hicks was such a disruptive presence in the Finley Forest condominium complex that last year residents held a meeting to talk about him.

None of them, of course, could foresee that he might be charged with murdering three people in a neighboring apartment Tuesday: two sisters, Yusor Mohammad Abu-Salha and Razan Mohammad Abu-Salha, and Yusor’s husband, Deah Shaddy Barakat — all of them Muslim. But some neighbors felt threatened by his behavior.

"I have seen and heard him be very unfriendly to a lot of people in this community," said Samantha Maness, a resident of the complex. She said Hicks had displayed "equal opportunity anger" and that "he kind of made everyone feel uncomfortable and unsafe."

Maness said Hicks would often seek to have cars towed from the complex’s lot, either because they did not have stickers or because he did not recognize them. And she said he would complain about noise — he was upset when she and her friends were playing a card game and he thought they were too noisy, and he was again upset when she pulled into the lot with music playing loudly in her car.

"He was definitely aggressive, and he spoke harshly when he was upset," she said.

The police say they never received any formal complaints about him, but Hicks, a 46-year-old former auto parts dealer who has been studying to become a paralegal, appears to have functioned as a self-appointed watchman in the complex. The Chapel Hill police released a report about a 2013 incident in which he apparently called them to complain that someone had allegedly grabbed a tow-truck driver’s arm while he was trying to tow a car. And just last month he wrote on Facebook that he had called the police because he saw a couple having sex in a car in the parking lot.

Public records reveal only the barest of details about Hicks, who turned himself in after the shooting. He appears to have moved around the country several times. He voted in two recent North Carolina elections, once as a Democrat and once on a nonpartisan ballot. He has been divorced twice. His current wife, Karen Hicks, is now planning to seek a divorce, according to her lawyer, Rob Maitland.

"She doesn’t feel safe," Maitland said. "She is outraged and heartbroken over all of this."

Hicks’ Facebook page suggests that he has a strong interest in atheism and is contemptuous of religion; the page is filled with posts and cartoons mocking the intelligence of people who believe in the Bible. He also indicated that he was proud of owning a weapon: Last month he posted an image of a gun on a scale with the words, "Yes, that is 1 pound 5.1 ounces for my loaded 38 revolver, its holster, and five extra rounds in a speedloader."

Yusor Abu-Salha and Barakat had also been accosted by Hicks before.

"This man had picked on my daughter and her husband a couple of times before, and he talked with them with his gun in his belt," said the sisters’ father, Dr. Mohammad Abu-Salha. "They were uncomfortable with him, but they did not know he would go this far."

A friend of Yusor Abu-Salha’s said one of the altercations occurred last fall, after she left the apartment following a dinner and a game of Risk.

"Right after we left, Yusor heard a knock at the door, and it was Hicks," the friend, Amira Ata, told Fusion. Hicks complained about extra cars in the neighborhood, and of noise from the Risk game, she said. "While he was at the door talking to Yusor, he was holding a rifle, she told me later. He didn’t point it at anyone, but he still had it."

And a former roommate of Barakat’s also was aware of the threatening behavior, generally over use of visitor parking spaces.

"He would come over to the door, knock on the door and then have a gun on his hip, saying, ‘You guys need to not park here,’" Imad Ahmad, the former roommate, told The Associated Press. "He did it again after they got married."

The condominium complex is near the University of North Carolina, and the high number of students living in the complex contributed to parking and noise concerns. Students tend to live several to an apartment and are often out, or up, late.

Within the complex, even some residents who had not interacted with Hicks said they had heard about the confrontations over his efforts to control parking or noise levels.

"I didn’t really know him — I just saw him out when I walked my dog — but I knew he had some problems with other neighbors," said Patricia Jordan, a resident of the complex.

Hicks’ behavior as a neighbor has become central to a debate about whether the killings were a hate crime — a possibility still being investigated by the local police. Mohammad Abu-Salha said the history of hostility and the manner of the killings (he said the three victims had been shot in the head, though the police have not confirmed that) indicated that they had been targeted because of their faith.

"This was not a dispute over a parking space — this was a hate crime," he said.

Karen Hicks nonetheless insisted that her husband’s political views showed that he was not bigoted: She has emphasized that he supports same-sex marriage, abortion rights and racial equality.

"He often champions, on his Facebook page, for the rights of many individuals," said Karen Hicks, who said she had been married to Hicks for seven years. "That’s just one of the things I know about him, is everyone is equal."

Cynthia Hurley, who said she was married to Hicks years ago, said she had been unsettled by his enthusiasm for a 1993 film, "Falling Down," which depicts a man violently lashing out at society. "That always freaked me out," Hurley told The AP. "He watched it incessantly. He thought it was hilarious. He had no compassion at all."

Hicks is enrolled at Durham Technical Community College and has been taking 12 credit hours this semester, working toward earning "multiple certifications in our paralegal technologies program," according to a spokeswoman for the school, Carver Weaver. Weaver said in an email that Hicks was "a student in good standing and has been since fall 2012." She said he was on track to complete the paralegal certifications by May.

A paralegal instructor at Durham Tech, Susan Sutton, confirmed in a telephone call her previous comments to a local news media organization that Hicks was a bright, conscientious, good student who always sat in the front row, and said there had been no sign that anything was wrong. Sutton declined to comment further and referred queries to officials at Durham Tech.

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