Neighbor Fatally Shoots Stepfather During Domestic Dispute

Stepdaughter killed, other injured in tragic incident in Washington state

Apr. 10, 2026 at 4:55am

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An extreme close-up photograph of a single bullet casing on a dark surface, lit by a harsh, direct camera flash, conceptually representing the violence and tragedy of the incident.The aftermath of a tragic domestic dispute that turned deadly, exposing the harsh realities of gun violence and the need for better community support.Puyallup Today

In a tragic incident in Puyallup, Washington, a 47-year-old stepfather was fatally shot by his neighbor while allegedly threatening his adult stepdaughters during a domestic dispute. One of the stepdaughters, Christiannel Lyle Macapagal Maningat, was also killed in the chaos, while the other sister sustained serious injuries.

Why it matters

This case highlights the complex and dangerous dynamics of domestic violence, as well as the legal and ethical questions around the use of lethal force by a bystander to protect others. It also raises concerns about the availability of firearms and the need for better resources and support systems to prevent such tragedies.

The details

According to police, the incident unfolded on the morning of April 2 when Arnino Guanlao turned a handgun on his adult stepdaughters during a family dispute that spilled out onto the neighbor's driveway or garage area. The neighbor, who has not been named, intervened and shot Guanlao, resulting in his death. Sadly, Maningat also lost her life in the incident, while her sister was seriously injured and taken to the hospital.

  • The incident occurred on the morning of April 2, 2026.
  • Police were called to the scene and arrived shortly after the shooting.

The players

Arnino Guanlao

A 47-year-old stepfather who allegedly threatened his adult stepdaughters with a handgun during a domestic dispute, leading to his fatal shooting by a neighbor.

Christiannel Lyle Macapagal Maningat

A 23-year-old woman who was killed during the incident while her stepfather was allegedly threatening her and her sister.

Unnamed Neighbor

A resident of the Puyallup neighborhood who intervened and fatally shot Arnino Guanlao to protect Guanlao's stepdaughters.

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What they’re saying

“He was going to shoot the kids.”

— Michelle Weingarden-Bandes, Nearby Resident

“She was like the 'mom' in every situation, always checking on people and making sure everyone was okay. She was just a really lovable person, and so many people loved her deeply.”

— Family Members

What’s next

Police are investigating the legality of the neighbor's use of force, and whether it was reasonable and necessary to protect the stepdaughters from serious harm or death. The neighbor is cooperating with the investigation.

The takeaway

This tragic incident highlights the devastating consequences of domestic violence and the complex legal and ethical questions that can arise when bystanders intervene to protect others. It underscores the need for better resources and support systems to prevent such tragedies and ensure the safety of all community members.