Police say the plants have a street value of around £40,000.

The plants were discovered at homes in Gadds Lane and in Throckenholt.

At Gadds Lane the Police found 92 young plants in an outbuilding with a potential value of £32,000.

In Throckenholt 34 plants were discovered in a shed with a potential value of about £12,000.

A 61-year-old man was arrested on suspicion of cultivating cannabis at the Throckenholt address and taken into custody at King's Lynn.

Detective Inspector Dave Murphy said: "Today's raids were part of the force's ongoing crackdown on people who produce and supply drugs.

"Four raids were carried out and only two resulted in plants being seized but it should be a warning to others that we will find them.

"The week of action has been very successful so far. We have deployed officers from 6am each day and have successfully tracked down suspects for a range of serious offences, particularly violence.

"Our efforts to track suspects down and bring them before the courts will then continue beyond this week as we aim to keep crime figures falling in the Fenland area."

Chief Inspector Mike Winters, Fenland Area Commander, said: "The work by officers today is an important part of tackling drugs and making the area a better place to live.

"Sometimes the production of cannabis can be trivialised, however, there are people making a lot of money out of it and it is often associated with other types of crime."