Police investigating allegations of non-recent child sexual exploitation made by one woman have arrested 33 men.

The men, aged between 30 to 40 years, were arrested following an extensive policing operation which began on October 9, 2018.

A number of addresses in Calderdale, Bradford and Kirklees, West Yorks., were searched as part of the investigation.

All of those arrested have been released under investigation pending further enquiries.

The men, aged between 30 to 40 years, were arrested following an extensive policing operation (stock image)

The announcement comes just weeks after West Yorkshire Police said officers had arrested 55 men in relation to child sexual exploitation alleged by seven complainants in the Dewsbury and Batley areas.

That investigation centres on complaints made by seven women about alleged offences between 2002 and 2009.

A spokeswoman said the 33 arrests in Calderdale, announced on Monday, were part of an ongoing operation.

Detective Inspector Laura Nield, of Calderdale District Safeguarding, said: 'Protecting and safeguarding children is a top priority for the force and this operation forms part of West Yorkshire Police's ongoing commitment to investigating both current and non-recent sexual offences against children.

Announcement comes just weeks after West Yorkshire Police said officers had arrested 55 men

'These crimes affect the most vulnerable in our society and are truly heinous crimes.

'We have specialist safeguarding units in each of our five policing districts, which include officers dedicated to investigating and dealing with both current and non-recent child sexual exploitation.

'Tackling child abuse is not something the police can do alone, and we continue to work closely with local authorities, charities and other organisations to support victims and bring offenders to justice.

'All our investigations are victim-led and the long-term well-being of those victims is of paramount importance.

'We would urge anyone who has been a victim of sexual abuse, no matter when it took place, to report it to the police.

'You will be listened to, taken seriously and supported by professionals with experience of dealing with these kind of offences.'