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Ted S. Warren, Associated Press
A sign in tribute to Charlie and Braden Powell is shown posted at a growing memorial, Tuesday, Feb. 7, 2012, at Carson Elementary School in Puyallup, Wash., where Charlie attended school. Charlie and Braden were killed Sunday, along with their father, Josh Powell, in what police said appeared to be a deliberately set fire by Powell at a home in Graham, Wash.

TACOMA, Wash. — The family of missing Utah woman Susan Powell is holding a public funeral for her two sons, nearly a week after their father killed them in a gas-fueled blaze.

Hundreds of people are attending the Saturday service at Life Center Church in Tacoma, Wash. Many are wearing purple and blue ribbons in memory of 7-year-old Charlie and 5-year-old Braden.

Family members and the boys' teachers are scheduled to speak.

The boys' remains are in one coffin adorned with flowers.

They were killed in a fire set by their father, Josh Powell, when they went to visit him Sunday at his home in Graham.

Powell also died. He was a person of interest in the disappearance of his wife two years ago.

A private family interment will take place Monday.