Law enforcement agencies across Europe and South America have detained more than 35 people in a series of operations against the online trade in child sexual abuse material, according to authorities in Norway, Italy, and Argentina.

Norwegian police announced on Wednesday that 28 men, aged 22 to 54, were arrested in early June across seven countries—Norway, Sweden, Switzerland, Canada, the Czech Republic, Poland, and Germany—in an operation targeting buyers of such material. The suspects allegedly used the cryptocurrency Monero to pay for access to dark-web forums, and investigators traced the transactions using a method developed by Norwegian law enforcement. Europol confirmed that electronic devices, crypto wallets, and narcotics were seized, and warned that further arrests were likely.

Separately, Italian prosecutors in Catania reported the arrest of seven men and placed 30 others under investigation in a nationwide sweep against the dissemination and possession of child pornography. Over 100 postal police officers executed search warrants in 17 cities, from Bolzano to Catania, seizing tens of thousands of illegal files. The suspects, all male and aged 19 to 59, include students, unemployed individuals, office workers, and professionals, according to the Catania prosecutor’s office. Investigators said they infiltrated dark-web groups exchanging videos, some depicting very young children, and are now working to identify victims.

In Argentina, a young man was detained in the city of Balcarce, Buenos Aires province, on charges of producing and commercializing child sexual abuse material. The investigation began in March after the international organization Missing & Exploited Children flagged an IP address in Balcarce. Police seized a mobile phone during a raid authorized by a local court, and the suspect remains in custody while forensic analysis continues.

It remains unclear whether the operations are linked. All investigations are ongoing, and authorities have not released the identities of the accused or the number of potential victims identified so far.