Officers came across a potential cannabis operation when they stopped a motorist driving erratically in the early morning hours.
Two officers were on patrol just before 4 am on Friday 12 May when they noticed a suspicious vehicle near Crocus Street in Nottingham.
The vehicle was swerving onto the wrong side of the road, nearly causing a head-on collision.
The vehicle was stopped, and the driver failed to provide a breath test.
Officers then searched his vehicle when they could strongly smell cannabis and located a bag containing 18 packets of cannabis.
He also had £180 in cash. A warrant was then executed at his house at 11 am in Traffic Street where a large quantity of cannabis was found in a desk.
There was also a safe, which was opened, where officers found more cash.
A 19-year-old man was arrested for possession with intent to supply and failing to provide a roadside breath test on request.
Chief Inspector Karl Thomas said: ” This was a great result by officers out on mobile patrol.
“Not only did they stop a driver who could have potentially caused harm to other road users but they also came across other potential criminal activity.
“A warrant was then executed where drugs and cash were recovered. Now more work is underway to determine the scale of this operation.”