An alternative version of this theory is that authorities were aware of "Sydney" being attacked at the time of or shortly after the battle, but deliberately delayed organising searches for survivors. There is no evidence that anybody ashore knew of the battle until "Trocas" found German survivors and informed the authorities. The Sydney Research Group allege that "Sydney" attempted to radio Darwin to report that the cruiser was on fire and being abandoned. Other individuals or groups have made claims that they heard or witnessed the receipt of messages (either voice or morse) from "Sydney", or saw transcripts of these messages. All claims state that transcripts and other evidence were later destroyed.