Organised criminal gangs are being targeted by police following the arrest of four people in Preston on Monday.
Three men aged 19, 19 and 26 were arrested alongside a 48-year-old woman on suspicion of money laundering.
Police have warned that any members of the public found helping organised crime gangs will be pursued and prosecuted by authorities.
A police spokesman said, “Organised Crime can take many different guises, from possession of firearms, sophisticated drugs importation and supply networks, organised people trafficking leading to enforced labour or prostitution, to high profit environmental crime and professional money laundering used to legitimise criminal income.
“But organised crime also permeates down to street level and may directly affect you and your family.
“The drug dealers on street corners, people in the local pub selling contraband goods, outbreaks of violence that can frighten and intimidate those who witness it are often linked to Organised Crime Groups (OCGs).
“Lancashire Constabulary is committed to tackling organised criminals and restricting their opportunities to thrive and undermine decent, law abiding citizens.”
Anyone with information should contact police on 101 or independent charity Crimestoppers on 0800 555 111.