Navy investigators scouring the USS Iowa for clues to what set off a series of explosions that killed 47 sailors in a gun turret said no timetable has been set for completion of the inquiry. "The investigation will proceed at its own pace" and could take several months, Cmdr. John Woodhouse of the 2nd Fleet said Tuesday.

The board of inquiry is headed by Rear Adm. Richard Milligan, who is interviewing crew members and examining the damaged No. 2 turret, where the explosions occurred. Members of the investigative team are not commenting on the probe.Woodhouse said investigators are talking to "people in the turret, on the bridge ... anybody with a shred of evidence that will help solve the puzzle of what happened."