. >> a man named john onuma called saying he knew where her body was. that information turned out to be false. he is still considered a person of interest. in 2003 author linked robert durs to the case in the book about the death of derst's wife. >>> the district attorney in almeida county opened a criminal investigation into the deadly balcony collapse. six young people were killed. the d.a.'s announcement comes two days after inspectors say the balconies beams had severe rot. >> as with any criminal inquiry we will have to headache the determination whether there are facts that support criminal charges, whether or not the charges could be proven beyond a reasonable doubt in a court of law. >> the last known criminal ros prosecution occurred in san francisco nearly 20 years ago. abc 7 news talked to an attorney who represented one of the injured victims. >>> mccarthy says that property owners and builders are being held accountable. until that happens these tragic happens will continue to happen. >>> two children are in critical condition and san jose