Three released after tests show death was natural
Jake Zuckerman/BBCThree people who were arrested on suspicion of murder have been released after a post-mortem examination confirmed a man died from natural causes.
Lincolnshire Police said officers were called to Clifton Street in Lincoln just before 10:30 BST on Sunday following the discovery of a man's body.
The force said it received a post-mortem report on Monday which showed the 55-year-old man died from natural causes. A file will now be submitted to the coroner.
Two men, aged 33 and 50, and a 54-year-old woman, who were arrested on Sunday, will face no further action, police said.
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