Officers investigating an unexplained death in Doncaster have arrested two men in connection with the incident.
A 41-year-old man from the Balby area has been arrested on suspicion of being concerned with the supply of drugs and perverting the course of justice.
A 27-year-old man from the Balby area has also been arrested on suspicion of being concerned with the supply of drugs.
Both have been released under investigation pending further enquiries.
At around 6.40am yesterday (Sunday 20 May), officers received reports that the body of a 40-year-old man had been found in an alley off Oliver Road in Balby.
A post-mortem carried out yesterday has proved inconclusive and further toxicology tests will be carried out.
Anyone with information is asked to contact 101 quoting incident 249 of 20 May 2018.