the san bruno pipeline investigation is now finished. the results were released today in washington. this report makes it very clear that pg & e is largely at fault. reporter: the pg & e pipeline blast destroyed 36 homes and killed eight people in san bruno. a fire that pg & e failed to control for and hour and a half. tonight the report put blame on pg & e. pg & e records about the pipeline were critically flawed. some of this information was inaccurate. the pipeline was not seemless but had a longitudal not seamless, but had a longitudinal seam. the results were misinterpreted or ignored. reporter: ntsb staff also said that pg & e did not take precautions. investigators also say that pg & e did not take the right precautions leaving people in the dark. while the majority of the blame fell on pg & e the ntsb said there s a lack of government oversight and there s a need to create state and federal regulations for testing older pipelines. jana katsuyama, ktvu chan