A young motorbike fan has been revealed as one of the six victims in three days to have been killed by a deadly batch of Class A drugs.
Cian Daly, 20, has been named locally as one of the victims struck down within a 10-mile radius of Southend-on-Sea.
Police have issued an urgent warning following the drug-related deaths and friends and family have now paid tribute to Cian, with one describing him as 'the most clever person' they knew.
Essex Police said six people have died in the Southend area since Sunday after taking substances, adding it was an 'obvious concern' and officers are investigating whether they are linked.
Police said the substances involved were Class A drugs but added they did not know what type or if more than one was involved. It is understood they are not contaminated.
Cian Daly (pictured above) has been named locally as one of the six victims to have been struck down by the drugs
Police are investigating after six drug-related deaths in Essex in 36 hours, pictured on this map
People took to social media overnight to pay tribute to Cian, with the Basildon Echo reporting that he helped to teach young disabled peopel to fish.
One social media user said: 'Not only was Cian one of the most clever people I know (he could strip a bike engine up and down for fun when he was 16), he was also one of the kindest people I know.
'If you were ever in trouble, you knew Cian would be there for you, whatever the situation.'
The first case took place on Sunday when a woman in her 30s was found dead in Southend.
A woman in her 40s was the most recent casualty after she was found unresponsive in Canvey Island yesterday.
On Monday a man in his 20s was found dead in Leigh-on-Sea and police then discovered the body of a woman in her 30s in Westcliff later the same day.
On Tuesday officers found the bodies of a man in his 40s in Canvey Island and a man in his 20s in Benfleet.
Detective Chief Inspector Stephen Jennings, from the Kent and Essex Serious Crime Directorate, said: 'These deaths in the space of around 36 hours in one area of Essex is