Two tourists from Hungary died in the July 2010 accident . The pilot of a tugboat involved has agreed to plead guilty to a charge , prosecutors say . Deborah Hersman , chairwoman of the NTSB , said after the final report showed several people involved were on the cell phones or computers . A barge being towed by the tugboat hit a sightseeing `` duck boat '' which was carrying about 100 people on its way back home after visiting Budapest's famous Buda Castle and other sights during their trip around Europe last year.
Two tourists from Hungary died in the July 2010 accident . The pilot of a tugboat involved has agreed to plead guilty to a charge , prosecutors say . A barge being towed by the tugboat hit a sightseeing `` duck boat '' which was carrying about 100 people on its way back home after visiting Budapest's famous Buda Castle and other sights during their trip around Europe last year.