Engineer of Metro - North train that derailed was suffering from sleep apnea , NTSB report says . William Rockefeller Jr. had no history of sleep disorder before the accident , it says . The train was hurtling along at 82 mph , far above the speed limit of 30 mph for that section of track as it approached a sharp bend in the Bronx . ` ` There was no criminality in relation to my client , '' Rockefeller 's attorney says . Four people were killed and dozens were injured in the accident in the Bronx .
Engineer of Metro - North train that derailed was suffering from sleep apnea , NTSB report says . William Rockefeller Jr. had no history of sleep disorder before the accident , it says . ` ` There was no criminality in relation to my client , '' Rockefeller 's attorney says . Four people were killed and dozens were injured in the accident in the Bronx .