On 31 October, "Glasgow" entered Coronel harbour to collect messages and news from the British consul. Also in harbour was a supply ship—"Göttingen"—working for Spee, which immediately radioed with the news of the British ship entering harbour. "Glasgow" was listening to radio traffic, which suggested that German warships were close. Matters were confused because the German ships had been instructed to all use the same call sign, that of "Leipzig". Spee decided to move his ships to Coronel to trap "Glasgow" while Admiral Cradock hurried north to catch "Leipzig". Neither side realised the other's main force was nearby.