Searches are continuing in the lake at Walsall Arboretum after reports that a man was in difficulty in the water.
Emergency services were called to the scene at 7.30 last night, after a member of the public reported seeing someone in the water.
The police helicopter has been used in the search, but specialist teams from West Midlands Fire Service and West Midlands Police were unable to find the man.
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A large tent has been put up around the area while investigations continue.
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