Four released after Stoke-on-Trent's man's death
Four people arrested in connection with the "sudden" death of a 47-year-old man have been released under investigation.
Emergency crews were called to Wainwright Walk, Hanley, Stoke-on-Trent at about 19:25 GMT on Thursday.
A post-mortem examination proved inconclusive and further inquiries were needed to establish the cause of death, Staffordshire Police said.
Three men aged 45, 37 and 27, and a woman, aged 47, all from Stoke-on-Trent, have been released.
The force said formal identification would take place early next week and the death was not being treated as suspicious.
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