Police were called to the University of East Anglia in Norwich at 8.40am today following reports a body had been found in the lake on the site.
A Norfolk Police spokesman said: "Emergency services are on scene and the area has been sealed off."
The force has not yet confirmed the age or gender of the person involved.
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A Cambridgeshire animal rescue centre says it's seeing more cats being abandoned in life-threatening conditions.
Temperatures will fall quickly this evening and a sharp frost will develop across the region.
A £20,000 pound reward is being offered for information that could lead to Mr Moore's safe return.