DRUGS worth £50,000 - along with bullets - have been seized in a police swoop in a Holme Valley village.
And officers have revealed that the drugs bust in Honley came from tip-offs.
The operation began when police stopped two cars in the village at about 3pm on Wednesday.
They found a large quantity of drugs, believed to be heroin and crack cocaine.
The officers from the Kirklees District Drug Team arrested three men - a 19-year-old from Denby Dale and two aged 26. One comes from Honley and the other from Bradley.
They were detained on suspicion of possession with intent to supply class A drugs.
As a result of investigations, officers then raided three homes in the Honley area.
They arrested a 19-year-old woman after finding another quantity of suspected class A drugs - along with the bullets - in a house.
The woman was also arrested for possession with intent to supply class A drugs.
All four have been released on police bail pending inquiries.
The drugs are being examined by forensic experts.
It is believed the total value of the suspected drugs is about £50,000.
Det Insp Mick Turner, of the drug team, said: "This investigation came as a result of calls to Crimestoppers through the Dob In A Dealer campaign.
"As each call is anonymous, we don't know who to thank. But we are extremely grateful.
"Calls to the campaign play a significant role in deciding which areas we target and who we investigate.
"We appreciate every piece of information provided by the public and urge this kind of action against drugs to continue," he added.