hello, everyone, you are watching "cnn newsroom." i'm rosemary church. >> i'm john vause. we'd like to welcome our viewers in the united states and around the world. we begin with the rising death toll in the south korean ferry disaster. >> 108 confirmed dead, 190 still missing. the underwater search turned up no additional survivors. >> prosecutors are working on their case against crew members. four arrests monday bring the total in custody to seven. >> and nearly a week after the ship carrying mostly high school students went down, the ferry's operator offers another apology. it says in part, "we pray for the victim who lost their precious livestude the accident. we prostrait ourselves before the victims' families and beg for forgiveness." now for the latest on is the research, our nic robertson is