now, because so many migrants were locked beneath decks, it was the poorer ones the ones who couldn't afford a spot on the higher levels of that three-level fishing boat that were essentially condemned to die. when that boat sunk they went with it. it was only the ones on the upper decks that could jump into the sea and get to safety. that is the other piece of news in terms of the human smugglers, the human traffickers cramming these migrants on board like sardines. tonight the prefect of catania says police have arrested two of the 27 survivors on suspicion of being part of that human trafficking ring anderson. >> it just sounds horrific trapped, locked below deck with the ship going under, karl penhaul appreciate the details. a lone officer, a dangerous suspect and body cam video capturing a most important decision a police officer will ever have to make. >> don't do it man.