Four arrests have been made in connection with the exploitation of migrant workers.

The arrests, which are part of Operation Endeavour, were made in Wisbech, March and King’s Lynn.

A 33-year-old woman from King’s Lynn was arrested in King’s Lynn and two men, aged 37 and 49, both from Wisbech, were arrested in Wisbech on Tuesday.

A 25-year-old woman from King’s Lynn was arrested in March yesterday.

All were arrested on suspicion of fraud and have been released on police bail until February 12.

Operation Pheasant, a joint-agency campaign to tackle homes of multiple occupancy and poor living standards, was launched in November last year.

The operation uncovered widespread exploitation of Lithuanian and Latvian workers, who were often forced by gangmasters to live in overcrowded housing.

Nine arrests were made during a series of co-ordinated raids on a day of action in October which involved police, the Gangmasters Licensing Authority (GLA), the National Crime Agency (NCA), Fenland District Council, the Home Office and the Vehicle and Operator Services Agency (VOSA).

Fenland Commander, Chief Inspector Mike Winters said: “These arrests show that our work with the GLA to tackle exploitation continues unabated.

“Operation Endeavour was not a one-off day of action and we will continue to seek out those who are gaining from others’ suffering.”