Hostage situation unfolding at this hour inside a bank. Several reportedly trapped inside. Good evening. Its great to have you with us on a friday night. We begin with the urgent headline from puerto rico at this hour. A dam at imminent risk of failure, a lifethreatening situation. A Mass Evacuation under way. Some 70,000 people across the island. Catastrophic flooding and mudslides already. The governor saying its time to get people out. We begin with abcs rob marciano on the scene to get Tens Of Thousands to higher ground. Rob. Reporter a disastrous development happening in puerto rico. A large dam is beginning to fail. Two towns and Tens Of Thousands of people in danger downstream. A Flash Flood Emergency in effect right now. Officials urging people to get to high ground. This is a lifethreatening situation happening now. Tonight the new emergency in this unfolding disaster. The battering of Hurricane Maria and her 40 inches of rain causing this major dams failure. Flash flooding fo
called the governor s office on her behalf. calling again today. we had trouble getting through and we re not alone. communications nearly impossible across the island. drivers lined up here as far as the eye can see to access one o towers. maria hasn t seen or heard from her mother since before the hurricane hit. some relief knowing her parents are okay. then the son of one of her patient s shows up with a diesel that the care center desperately needs. how long does a tank last? eight hours. reporter: another temporary fix. elation with knowing there s enough fuel to at least get through the night. rob marciano is back with us. from puerto rico. we re glad to see the nursing home at least got some fuel. we ll stay on that. the other major concern you reported on the dam, tens of thousands told to get to highe ndougr reporter: yeah.