Detectives are investigating a fifth suspected drug-related death in south Essex.
A woman in her 40s was found dead on Canvey Island on Tuesday 31 July in the evening.
It follows the deaths of three men and a woman in Leigh-on-Sea, Westcliff, Canvey Island, and Benfleet in the space of around 36 hours.
Detective Chief Inspector Stephen Jennings, from the Kent and Essex Serious Crime Directorate, said: “Five deaths in the space of around 36 hours in one area of Essex is an obvious concern and my team are working hard to establish if they are linked.
“Part of that work is to identify exactly what the substance or substances involved are and more tests are needed to do that.
“At this stage I believe the deaths may be linked to the taking of Class A drugs and I would urge anyone considering taking them not to.
“Another element of our investigation is identify where the substances involved have come from and I need anyone who has information about the sale of Class A drugs in south Essex – or elsewhere in the county – to come forward.”
If you have any information about these deaths or the sale of Class A drugs please call us on 101 or Crimestoppers anonymously on 0800 555 111.