KING COUNTY, Wash. (KOMO) — Five people are dead including two adults and three juveniles after a reported shooting early Monday morning inside a home southeast of Seattle, according to the King County Sheriff's Office.

Homicide detectives are investigating the shooting as a domestic violence event, said KCSO Public Information Officer Mike Mellis.

This is a significant event for the neighborhood," Mellis said. "And I’d call it a significant event for the region.

Multiple callers reported a disturbance at a residence with gunfire involved. At a press conference on Monday afternoon, Mellis clarified that there were initial reports about a suicide incident and a "hanging." Mellis said after their preliminary investigation they determined the situation was not a suicide.

Deputies from different parts of the county responded to the 7700 block of Lake Alice Road Southeast, near the Lake Alice public boat launch.

Before deputies arrived, they learned a neighbor with a medical background gave aid to one of the residents. That resident was taken to Harborview Medical Center and is in satisfactory condition.

Mellis said that when deputies arrived at the home the incident had already concluded. Deputies immediately secured the scene on arrival and entered the home.

What they found was a mix of injured and deceased persons," Mellis said, but he did not clarify their relationship to one another.

The major crimes unit of the KCSO will lead the investigation along with the medical examiner's office but asked for help from the Washington State Patrol (WSP) to bring its crime scene response unit. WSP will take over the forensics at the scene.

It was a traumatic scene," Mellis added. "That discovery prompted the investigation.

Mellis said asking for help from the WSP implies that the situation is serious and will require expertise and time.

“It’s going to be a very significant, long investigation at this house," Mellis said.

During the press conference, Mellis confirmed a teen boy had been taken into custody.

The KCSO obtained and executed a search warrant on the home, Mellis said. He said he expects there to be multiple search warrants ordered beyond the initial property.

“Search warrants in 2024 are often used as technology might become relevant to a case," Mellis said. "Phone records, cloud accounts, cloud surveillance cameras.”

There were multiple agencies and departments at the scene early Monday morning.

The Issaquah Police Department, King County Prosecuting Attorney's Office, and King County Medical Examiner's Office (KCMEO) were all on the scene.

The KCMEO will be the only authority to release the name and biographical details of victims, according to Mellis.

Mellis said the KCMEO brought its own investigator and doctors to see the scene to help determine the manner of death.

The neighborhood is quiet and does not see much drama or police activity, Mellis said. After a general search of the address, the property is not considered a "problem house."

“It’s a pretty nice area, low crime rate in general," Mellis said of Fall City, an unincorporated area in King County. "This is a place where people come to raise their families.”

"Everybody in this community is going to have some effect to this tragedy," Mellis added.

Mellis said the KCSO does not believe there is a danger to others because it was a domestic violence event. He also said they do not anticipate there being any additional arrests.

The KCSO said detectives are getting organized and determining what other resources or agencies are needed to aid in the investigation. The KCSO also said witnesses are cooperating and helping detectives with the investigation.

This is a developing story. Check back for updates.