good morning. i'm john muller. >> i'm diana perez. >> here are top headlines we are following on "world news now." new questions about a delay in the evacuations from the sinking korean ferry as rescuers once again battle harsh conditions in those murky waters. details are just ahead. >> police have an unidentified man in custody who they say is the sniper behind a highway shooting spree that left three motorists injured in kansas city. a s.w.a.t. team picked a suspect up from a suburban home, not far from where several shootings took place. >> the u.s. navy's robot sub is on its fifth mission exploring the floor of the indian ocean, looking for clues in the disappearance of the missing malaysian airlines jet. so far it hasn't found anything. >> bill and hillary clinton are tweeting about how excited they are about becoming grandparents. chelsea announced yesterday she is pregnant. she grew up in the white house.