Powell boys to be laid to rest

>>> no to washington state where investigators have found new evidence against josh powell who killed himself and his two young sons on sunday. a bloody comforters with found in a sforj ystorage yu night, this as his two young sons will be laid to rest.

>> reporter: good morning. a large crowd will be here gathering in a few hours. this as we learn more about their father who was accused or who murdered them and the evidence police have collected against him. in the days following josh powell 's double murder /suicide, police continue to make shocking discoveries. just yesterday they announced they found a blood-soaked comforter in the storage shed represented by josh powell . potential evidence that will undergo further testifying. too early to tell if it could belong to his missing wife susan who investigators openly say he may have murdered back in 2009 . also this week police released this picture. josh powell withdrawing $7,000 from a bank 24 hours before he sets he home on fire with his boys inside. mounting evidence that includes disturbing images also found on his home computer .

>> what that was. it was pornography in that it was animated. it was cartoons, but it still kind of hinted at incestuous kids and adults, but it was animation cartoons.

>> reporter: the image, say investigators, were among the reasons that powell feared he would lose supervised visits with his two boys. on sunday when a social worker brought 7-year-old charlie and 5-year-old brayden to his home, he took their lives in what please called a well plan and calculated fire. the social worker says powell told his boys, i have a surprise for you after slamming the front door shut. after hearing a scream from brayden, the social worker dialed 911.

>> they have to respond to emergency, life-threatening situations first.

>> this could be life-threatening.

>> reporter: on the official mrm call, confusion. a deputy wasn't dispatched for your eight minutes. by the time the police arriving 22 minutes after the call, there was nothing they could do.

>> i just wish that i had understood better what the circumstances were and the lethal quality of this call and all the dangerous potential that was there.

>> reporter: though never charged with a crime, josh powell was named as a person of interest in his wife susan 's 2009 disappearance, but police now call his double murder /suicide an admission of guilt in his wife's suspected murder.

>> and it's not over. our daughter still missing. we don't know where she is.

>> reporter: josh powell 's father, steven powell who was arrested on a count of child pornography and pled not guilty has been named a person of interest in susan 's disappearance. so far investigators have not been able to speak to him. meanwhile, lester, later today the focus will be on charlie and brayden as his grandparents remember both those two young boys and their daughter. lester?

>> an incredibly sad tale. miguel,