A fire broke out on a tanker belonging to the Pakistan navy at a dock in this southern port city on Thursday, and relief officials said at least 60 people _ most of them sailors _ were injured in the blaze. "We have pulled out 60 to 70 injured people," rescue official Rizwan Edhi told The Associated Press. Hospital officials said 48 injured had been brought in so far and more were on the way. The Pakistan Navy confirmed the fire, which is said broke out during routine exercises on the boat, but had no comment on the number of injuries. Lt. Cmdr. Salman Ali said the cause of the fire was not known. Helicopters swarmed in the air over the enormous tanker, which was sitting on a dock in the Arabian Sea.