Five coastguard teams spent two hours searching around Corton after a dog walker reported hearing shouts for help from the cliffs.
Crews from Lowestoft, Southwold, Great Yarmouth, Happisburgh and Mundesley were called out at 1.50am, during poor weather.
A spokesman for the coastguard said: 'A guy was walking a dog. He thought he heard shouts for help. He went back and called us, and as a result those teams went out and undertook a search.'
However, he said no-one was found, and the crews were stood down at 4am.
He added: 'The general consensus is that the area has been pretty well searched, so everyone is satisfied that there was nothing to be found, and no-one to be rescued.'
He said that police were also involved in the operation.
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