A man fished out what he believes to be a First World War grenade in the Regent's Canal on Saturday (March 27).
James Cooper was surprised to find the grenade on the end of the magnet he uses to trawl the muck at the bottom of the water.
He called the police at shortly after 11.30am and officers cordoned off the area before the bomb squad arrived to ensure it could be taken away safely.
James, from Maida Vale, said he had dredged this area of the canal, near to Charlbert Street, before.
The 42-year-old told this newspaper: "I can't see anything when I send that magnet down.
"I pulled it out of the canal and it looked like a grenade. Thinks this is probably like World War Two. Last weekend I found an old 1980s mobile phone, tools and all sorts of rubbish.
"I don't want to play around with it. I don't even want people walking past it, you get a little nervous."
One officer told the Ham&High at the scene it appeared the grenade may be "a dud".
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