Senior Investigating Officer, Detective Chief Inspector Paul Durham said: “We are investigating an allegation that a drugs overdose was administered to a patient, leading to his death.
“A Home Office post-mortem, carried out earlier this week, determined the cause of Mr May’s death as heart failure and we now await the results of further toxicology tests which will help inform our inquiry."
More top news
Saturday will be warm with some sunshine but rain will arrive on Sunday and it will feel much cooler
David Cameron has outlined what a Conservative government is pledging to the East of England in new jobs and investment.
After a fine start to the weekend, the weather will turn cooler and more unsettled