Man allegedly killed two brothers before being arrested on his way to murder third sibling

A Washington man has been accused of killing his two half-brothers before being arrested en route to killing a third sibling.

Seth South, 23, was arrested Wednesday night, hours after officers found his teenage brothers, Sebastian and Scotty Bass, with their throats slit and in pools of blood at their family home in Poulsbo, Kitsap Daily News reports.

Prosecutors have said South called 911 to report that one of his family members had their throats slit before the call went silent.

The dispatcher said she heard fighting in the background, but then the connection remained silent until police arrived on the scene, according to court documents.

They then found Scotty Bass face down in a pool of blood with a kitchen knife nearby, and Sebastian sitting at the top of the stairs, also surrounded by blood with a gun on a nearby table and a magazine and a bullet next to it. according to documents obtained by the Kitsap Sun.

Seth South, 23, was arrested Wednesday night for allegedly killing his two half-brothers

Officers found both victims in their Poulsbo home with their throats slit and in a pool of blood

Officers found both victims in their Poulsbo home with their throats slit and in a pool of blood

Detectives later learned that South lived in the home with the two teens, but he was nowhere to be found.

Officers then continued interviewing family members, and South’s grandfather said he told him, “You’re either with me or against me” and that he killed “the boys.”

His mother also claimed that South told her he “didn’t hurt the boys,” but her husband, Christopher Bass, claimed that South told him he had killed two people.

Documents also say South told a friend he was going to Missouri to kill another sibling. KIRO reports.

In the aftermath, authorities issued an arrest warrant for South and a statewide alert was issued about his Toyota Tacoma.

Pierce County sheriff’s deputies later found South driving the vehicle on State Route 310 near Bonney Lake, and officers threw stop sticks to deflate South’s tires.

They were then able to get South to stop and took him into custody.

Authorities noted that there was blood on South’s shift knob, as well as the driver’s seat, and bloody clothing was found in his car.

Pierce County deputies found South traveling in his Toyota Tacoma on State Route 310 while allegedly on his way to kill a third sibling, and took him into custody.

Pierce County deputies found South traveling in his Toyota Tacoma on State Route 310 while allegedly on his way to kill a third sibling, and took him into custody.

After being questioned by Kitsap County detectives, police say South attacked a detective when they tried to handcuff him again, causing the detective to suffer a cut on his head.

South now faces two counts of second-degree murder, as well as an assault charge for hitting the detective.

He appeared in court Thursday, when a judge ordered South to undergo a competency evaluation at Western State Hospital, KING 5 reports.

In the meantime, South remains in prison, where he faces two life sentences plus five years, along with a $110,000 fine.

He is due to appear in court again later this month.