UPDATE: Family of 5 killed in apparent murder-suicide was close-knit, loving with no outward problems

Investigators think the five people found dead this week in a burned Marion County home died in a murder-suicide.

Three children and a man died of gunshot wounds to the head, and a woman died of blunt force trauma to the head, deputies announced in a news release Friday.

Authorities didn't publicly identify the people who died, but the bodies appear to be a family of five that lived in the Hubbard-area home: Erin and Keith Kroeker, ages 39 and 42, and their three school-age children -- 10-year-old twin boys and a 7-year-old girl.

Investigators think the home was intentionally set on fire Tuesday morning. Two other buildings, a shop and detached garage, were ignited separately.

The home and shop were engulfed in flames when firefighters arrived in the 18000 block of Fobert Road Northeast about 3 a.m. Tuesday, said Lt. Chris Baldridge, a Marion County Sheriff's Office spokesman. The detached garage was also on fire.

Firefighters found a body inside the home while first battling the blaze, Baldridge said. The sheriff's office announced Thursday afternoon that the other four bodies had since been found in the home.

-- Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015