now. >> take a look at that. breaking news. explosions and flames simply too tough to fight. a fire burning on a pair of fuel barges dangerously close to a cruise ship. new information live from the scene just ahead. new clues in the investigation into the boston marathon bombings. we now know what may have been used to trigger the deadly blasts. also, tracking down the russian connection. cnn with a first-hand look at the place where the suspects may have learned to make their bombs. good morning, everyone. welcome to "early start." i'm john berman live in boston this morning. live coverage with the latest developments in the boston bombing case coming up in just a moment. and i'm back here in new york. it is thursday, april 25th. it is 6:00 a.m. in the east. and we begin with breaking news. two fuel barges burning at this hour with three people now