Two men have been quizzed over the death of a man whose body was found in a Doncaster alleyway.
The men, aged 41 and 27, were both arrested on suspicion of being concerned in the supply of drugs.
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The older man was also arrested on suspicion of perverting the course of justice.
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Both have been released under investigation pending further enquiries.
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They were arrested following the discovery of the body of a 40-year-old man in an alleyway off Oliver Road, Balby.
A post-mortem examination carried out yesterday proved inconclusive and further toxicology tests were ordered.
Anyone with information should call South Yorkshire Police on 101 quoting incident 249 of May 20.