Five people have been arrested in Wiltshire in connection with a charity fraud.
Police said the fraud, which targeted charities across the country through mail marketing, is thought to involve hundreds of thousands of pounds.
The arrests were made after warrants were executed at four locations in the county on Wednesday.
Warrants were also executed in Hereford and Brighton, but no arrests made.
A woman and a man, both aged 46, were arrested in Ferndale Road, Swindon, and a 41-year-old man was arrested at Firecrest View in the town.
A 25-year-old woman was arrested at an address near Calne and a 36-year-old man was arrested in a hangar at Wroughton Airfield.
They were all arrested on suspicion of money laundering and fraud.
The 25-year-old was released on police bail pending further inquiries and the others remain in custody in Swindon Gablecross police station.
Items seized during searches of the properties include large quantities of documentation and a number of vehicles.
Det Insp Mike Rees, of Wiltshire Police, said: "This type of crime can have far-reaching effects and implications on businesses and communities throughout the country and following today's arrests a full investigation will now begin."