DETROIT (WWJ) - Authorities have arrested a suspect in the case of three people left fighting for their lives in what appears to be a case of domestic violence.

According to police, 29-year-old woman, her 39-year-old boyfriend and 8-year-old son were shot in the head at around 5 a.m. Tuesday at a home on MacKenzie Street, near Joy Road and Livernois, on Detroit's west side.

All three remain hospitalized in critical condition.

Developing: Detroit fire assisting Police in trying to find evidence after three people were shot in the head, including an eight-year-old boy. All three in critical condition. (Mackenzie near Livernois and Joy). @WWJ950 @FOX2News pic.twitter.com/5h5qYeb16r — Charlie Langton (@charlielangton) July 9, 2019

The woman's 3-year-old daughter, who was initially thought to be shot, suffered non-life threatening facial injuries; reports indicate she was pistol-whipped. Her 11-year-old son was able to escape the shooting unharmed.

Other circumstances surrounding the incident weren't immediately clear.

Police, who'd told reporters they had a suspect in mind, took a 25-year-old man into custody Tuesday afternoon. Police said he had "previous relationship" with the female victim, but did not immediately release his name or other details.

A male suspect was arrested, without incident, this afternoon accused in shooting three people in the head, including an 8-year-old boy. The suspect had a “prior relationship” with the female victim. Details on @FOX2News - @WWJ950 pic.twitter.com/tsuBxxgF4J — Charlie Langton (@charlielangton) July 9, 2019

Lola, who lives nearby, said the victims haven't lived in the neighborhood very long.

"It's just a lot of kids out there playing, and they're barbecuing, having little activities and stuff going on," she said. "I hear arguing going on a lot of times on that porch, but I don't know who it be because I don't know them."

An investigation is ongoing.

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