Pierce County Sheriff's spokesman Ed Troyer says they've identified three people involved in a home-invasion killing tied to a Craigslist advertisement - and two of them are already in custody.

"We do have the group in custody. We have their photos. We've got this case solved but we still have a lot of work to do as far as tactical operations and search warrants because we have a forth suspect out there."

Troyer says the three suspects they've identified were arrested on May 1st for unrelated charges during a traffic stop in Daly City, Calif.

The female suspect, Amanda C. Knight of Sumner, bailed out before authorities learned of her alleged connection to the killing of James Sanders last Wednesday night.

The two male suspects, Kiyoshi Higashi and Joshua Reese, are being held at San Mateo jail awaiting extradition to Washington state.

Troyer says the suspects have been charged with first-degree murder, robbery, and second-degree assault.

The three individuals identified Tuesday are suspects in the home invasion that targeted the Sanders home after the family posted an ad of a ring for sale on Craigslist.

Troyer says they are working to identify a fourth suspect.

Charging documents say that authorities received a tip that Higashi had called his father from California and told him that police had seized the gun used in the Edgewood robbery.

In the conversation Higashi reportedly told his father that he and Reese pistol whipped Sanders' son and another man shot Sanders. According to the court documents Higashi told his father, "it wasn't supposed to go that way."

Police in Lake Stevens are searching to find connections between the Edgewood incident and a similar incident in the Lake Stevens area.

Police say on April 25th in Lake Stevens two men responded to a Craigslist ad at a home where they brandished firearms, tied up the family and stole several items including a flat-panel television, jewelry, and a large amount of Iraq currency.

In both cases, intruders responded to the ads by phone and arrived at private homes in the evening, posing as buyers and displaying cash. Then they pulled guns, tied up the residents and ransacked the homes.

Troyer says authorities believe these suspects are responsible for both the Edgewood and Lake Stevens home invasions.

"We are 100 percent sure that these are our guys from the Edgewood case. And we believe that they are the Lake Stevens case, and Lake Stevens police and detectives have been working with us and they believe they are the suspects as well."