Four people have been arrested as part of a police focus on rape and sexual offences.
Three warrants were conducted at addresses in Burton Latimer, Kettering and Northampton.
In addition, a man from Milton Keynes has been arrested on suspicion of historic child sex offences.
As a result of the warrants three men were arrested, one from each address.
They were arrested on suspicion of possessing and distributing indecent images of children, and all three have since been bailed pending further investigation.
Teams of uniformed officers from the force’s response teams conducted the warrants and seized computer equipment.
Detective Sergeant Liz Ansell, who led the investigation, said: “We continue to encourage victims of violence and sexual assault to come forward to report offences.
“I’d like to reassure them that we will thoroughly investigate each and every allegation and put all our efforts into bringing offenders to justice.
“No matter how historic the offence, we will conduct a full inquiry.
“Sex abuse includes downloading and distributing indecent images of children.
“Anybody who takes part in this type of activity can be sure that we will find them, and should await a knock on the door from one of our officers.”
During this week, police forces across the country have been running targeted campaigns focusing on communicating how they deal with rape and sexual offences and the support victims should expect.
Northamptonshire started the campaign last week by encouraging victims of violence and sexual assault to come forward and report offences, and get the help and specialist support they need.
This week’s ‘In Focus - Rape’ is part of a series focusing on issues most important to policing – led by the Association of Chief Police Officers.
The spotlight will be on a different issue for a week each month, including alcohol harm, domestic abuse and cyber crime.