PIERCE COUNTY, Washington (KIRO-TV) Investigators are piecing together a timeline of Joshua Powell's actions before the fatal fire.
Surveillance photos show Powell withdrawing money from a Puyallup, Washington bank one day before he killed himself and his sons.

A search warrant of Powell's storage unit in Sumner, Washington reveals a bloody blanket, but whose blood is unknown.

"Our tests just shows that it has blood markers, it doesn't tell you sex, it doesn't tell you whose blood it is or even if it's human or not," says Det. Ed Troyer, Pierce County Sheriff's Department.

Powell was there the day before.

KIRO-TV reports there's more information coming from the pornographic images found in Powell's computer.

They were discovered through a search warrant two years ago.

Once they could look at the images, they found realistic animation that included incestuous scenarios — and child pornography.

Those images came up during a custody hearing a week and a half ago.