A man killed in Par in Cornwall on Saturday has been named as 57-year-old Colin Palmer from St Austell.
Three men and a 16-year-old boy have been arrested on suspicion of murder and have been released on bail until November.
Mr Palmer's family have been informed.
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A weekend of bad weather is due to hit the South West from today (6 February). The Met Office and Environment Agency have issued warnings.
The young man who turned his bedroom into a bomb-making factory and then tested the devices in disused mine shafts.
The Atlantic Jet Stream brings a yellow warning to the South West. There's the prospect of heavy rain and strong winds on the way.