Suspected heroin with an estimated street value of £4,500 has been seized from a vehicle in Keighley.
Observations by the Bradford District Drugs Team led to the discovery last Thursday, and also to £3,000 in cash being recovered from a local address.
Police arrested a 25-year-old man on suspicion of possession with intent to supply class A drugs.
He has been interviewed and released on police bail pending the results of forensic tests.
Drugs Team sergeant Simon Pridgeon said: "No matter how discreet dealers try to be they always get noticed. It doesn't take long for suspicious activity to come to the attention of our officers, or local residents.
"Once it has there's no going back. Anyone attempting to trade drugs in this area can expect to be identified, arrested and put before the courts."
l A Keighley teenager was arrested on suspicion of trying to sell drugs in a nightclub.
The 18-year-old, from Hainworth, and another man - from Undercliffe - were detained on Saturday night after they aroused the suspicions of door staff at the Bradford club.
They were arrested for possessing Class A drugs with intent to supply, and police seized a quantity of suspected ecstasy tablets.
Further enquiries by the Bradford District Drugs Team led to an address in Keighley, where suspected cannabis and an amount of cash were recovered.
Both men were released on police bail pending the outcome of forensic tests.
Over the weekend the drugs team made a total of seven arrests across the district
Detective Inspector Neil Benstead, of the drugs team, said: "These arrests continue thanks to the vigilance and support of local people.
"Drugs have no place in our clubs or on our streets, and we will do everything we can to rid this district of the fear caused by dealing and associated crime.
"I would encourage anyone who can help to come forward. If you know about drug dealing we want to hear from you.
"Your information is anonymous but it may be all we need to identify dealers and put them before the courts. If you can give us a starting point, we'll collect the evidence we need to begin a prosecution."
l Drug offenders can now be detained for up to 192 hours if the police believe that their stash has been swallowed.
Previous legislation meant police were only allowed 96 hours' detention for suspects.
But under new powers, which came into effect on January 1, police can keep offenders in custody long enough for the drugs to pass safely and naturally through their bodies.
The drugs can then be recovered using a special drugs toilet and sent for forensic examinations.
Detective Inspector Benstead added: "Drug dealers are known to use a number of tactics in an attempt to avoid arrest. Unfortunately for them we're always one step ahead of the game.
"This legislation effectively doubles detention periods for anyone suspected of swallowing drugs and it's a tool we're very keen to use.
"If you attempt to conceal drugs in this way then expect to be put before the courts for an extended spell in custody.
"We won't hesitate to use this power to get the evidence we need.
"By swallowing you are not only putting yourself at risk, the chances are you've willingly signed up to more time behind bars."
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