MOKPO, South Korea (AP) — Fresh questions arose about whether quicker action by the captain of a doomed ferry could have saved lives, even as rescuers scrambled to find hundreds of passengers still missing Friday and feared dead.

Officials also offered a rare look at their investigations, saying they were looking into whether a crewman’s order to abruptly turn the ship contributed to the 6,852-ton Sewol ferry tilting severely to the side and filling with water Wednesday.