In a tragic turn of events in Washington state, a man lost his life after reportedly engaging in a violent domestic altercation. Police say the incident unfolded when the man, identified as 47-year-old Arnino Guanlao, allegedly opened fire on two women during a heated family dispute that spilled over into a nearby driveway.

The Puyallup Police Department received an emergency call around 9:10 a.m. on April 2. Upon arrival, officers discovered that the situation had tragically escalated. According to investigators, Guanlao had shot two adult female relatives following a domestic argument that moved outside the family home.

Amid the chaos, a vigilant neighbor, who had been inside their own residence, took decisive action. This neighbor, stepping into the fray, intervened and fatally shot Guanlao, police reported.

The violent encounter resulted in the death of 23-year-old Christiannel Lyle Macapagal Maningat, who succumbed to her injuries at the scene. The second woman, whose identity has not been disclosed, sustained life-threatening injuries and was rushed to a nearby hospital for urgent care.

As the community grapples with this shocking incident, authorities are delving deeper into the circumstances surrounding the event. The investigation is ongoing and includes a thorough examination of the neighbor’s use of force during the confrontation.

Authorities said the case remains under investigation, including a review of the neighbor’s use of force.

Washington law allows a person to use force to protect himself or others if he reasonably believes it is necessary, but deadly force is only justified when facing an immediate threat of serious injury or death.

“That’s under investigation as to exactly how the circumstances took place,” PPD Capt. Kevin Gill said during a press briefing.

A Washington state man was fatally shot by a neighbor after opening fire on two women during a domestic dispute, leaving one dead and another critically injured. (FOX 13 Seattle)

Witnesses described a chaotic scene as gunfire erupted in the neighborhood.

“There was a girl here who was face down, and she was still breathing a little and trying to move a little, but she wasn’t doing much. And then pretty quick a cop came on scene, and he and I pulled her out, turned her over and found her gunshot wound on her abdomen,” neighbor Michelle Weingarden-Bandes told FOX 13 Seattle.

“We are all not just in shock about what we saw, those of us who were out here this morning, but that this has happened in our neighborhood.”

Washington law allows a person to use force to protect himself or herself or others if they reasonably believe it is necessary. (iStock)

Investigators said the neighbor who shot the suspect is cooperating as detectives work to determine the circumstances of the use of force, according to FOX 13 Seattle.

Detectives are also working to determine what led to the dispute and are processing multiple sites linked to the incident, the outlet reported.

Residents reported hearing multiple gunshots during the incident.

Law enforcement officials said detectives are continuing to interview witnesses, many of whom were left distraught by the violence.

Additional reporting by Law & Crime identified Guanlao as the victims’ stepfather and said he had been firing at his adult stepdaughters when the neighbor intervened.

Authorities have not said what sparked the initial dispute.

The PPD said detectives with its Criminal Investigations Division, along with the Metro Cities Crime Response Unit, are continuing to investigate the incident.

Fox News Digital has reached out to police for additional information.

The violence has left the victims’ family reeling.

A GoFundMe created for the family says the victims’ mother is now caring for her surviving daughters while grieving the loss of one child and remaining at the bedside of another who is still hospitalized.

The fundraiser, which has raised nearly $19,000, says the family’s lives “changed in a matter of moments” and describes the emotional toll on the two other daughters now coping with the aftermath of the violence.

Organizers said the funds will help cover funeral costs, medical expenses and basic living needs as the family navigates the aftermath of the shooting.