Five people were arrested on suspicion of drug offences after a drug raid in Kelvedon at the weekend.
The investigations, known as Op Society 2, was led by volunteer Special Constables and involved regular officers who raided a house in Docwra Road, Kelvedon, at 2.20pm on Saturday, February 7.
Four of the arrested men were suspected of possessing Class A drugs, believed to be mephedrone, also known as dolly or meow meow.
They included, a 30-year-old man from Kelvedon, a 21-year-old woman from Colchester, a 23-year-old woman from Witham, all arrested on suspicion of possession of what is thought to be mephedrone.
A 32-year-old man from Coggeshall was arrested on suspicion of possessing cannabis and mephedrone.
A 54-year-old woman from Kelvedon, was also arrested on suspicion of possession of cannabis.
Acting Sergeant Tom Bastendorff said: "Without the specials this wouldn't have been possible, they helped detain the suspects and seize the evidence so they're really valuable members of the team."
Five people were arrested as part of the operation on suspicion of drug offences have been bailed until April 21.
