breann rodriguez was last seen saturday riding her bike in front of her house. her distraught parents thanked the hundreds of people who have joined the search. police now say they're looking for a white old irmodel van with paneled sides and a ladder leading to the roof. a pharmaceuticalal ceo is speaking for the first time about the deaths of his son and girlfriend. >> but the millionaire did not reveal details about what happened at a san diego mansion that has now led to a major police investigation. abc's diana alvear has more. good morning, diana. >> reporter: rob and tanya, good morning. it's been a big mystery for weeks. did the girlfriend of a pharmaceutical executive commit suicide or was she murdered? we're finally hearing from that executive about the tragedy. despite two suspicious deaths at his mansion within days of one another, jonah shacknai has remained silent, until now. >> at a time like this one does a lot of introspective thinking. >> reporter: during his company's earnings report conference call, the ceo of medicis pharmaceuticals began on