Craig Stephen Hicks, 46, has been charged by Chapel Hill, NC police with three counts of first-degree murder for the deaths of three Muslim college students, who were all shot in the head at an apartment complex near the University of North Carolina campus. All three were pronounced dead at the scene.

According to WRAL, Hicks turned himself to police Tuesday night. Hicks is accused of shooting and killing Deah Shaddy Barakat, 23; Barakat's wife, Yusor Mohammad, 21; and her sister, Razan Mohammad Abu-Salha, 19.

Barakat, the Charlotte Observer reports, was a doctoral student at UNC-Chapel Hill's School of Dentistry; his wife and sister were students at North Carolina State University.

While a motive for the killings has yet to have been established by police, speculation swirls on social media that the shootings were motivated by religion (filtered through #MuslimLivesMatter).

The Independent found a Facebook page appearing to belong to Hicks:

Hicks' pictures largely consist of images with text mocking religion and supporting atheism, but include images of himself and his wife at Disneyland, what he describes as his "loaded 38 revovler", and himself separately on a quad bike and wearing a suit.

In one Facebook post found by CNN and purportedly written by Hicks, he writes, "When it comes to insults, your religion started this, not me. If your religion kept its big mouth shut, so would I."

Update, 11:44 a.m.: According to a statement released by Chapel Hill police, a "preliminary investigation indicates that the crime was motivated by an ongoing neighbor dispute over parking." Police, however, are continuing to investigate whether the shooting was a hate crime and say that Hicks is cooperating.

[Image via AP]