Alex Marunchak and Jonathan Rees held as part of Operation Kalmyk Operation Kalmyk officers are understood to be questioninging a former News of the World journalist and private investigator. Photograph: Scott Barbour/Getty Images Scotland Yard officers investigating alleged computer hacking have made two further arrests, understood to be former News of the World journalist Alex Marunchak and private investigator Jonathan Rees. The two men were arrested shortly before 7am on Tuesday morning at their homes by police officers working on Operation Kalmyk. This is an investigation into journalism related computer hacking which is being carried out under the auspices of Operation Tuleta, the wider Metropolitan police probe into criminal breaches of privacy. A 58-year-old man - understood to be Rees - was arrested in Surrey and taken to a south London police station. The second arrestee is a 61-year-old male journalist - understood to be Marunchak - who will be interviewed at a Kent police station. Both were arrested for alleged offences under section 3 of the Computer Misuse Act 1990 and sections 1 and 2 of the Regulation of Investigatory Powers Act 2000. Tuesday's arrests bring the total number under Operation Tuleta to 16. Tuleta is being run in conjunction with the Met's other investigations into alleged illegal activity by journalists, Operation Weeting (phone hacking) and Operation Elveden (inappropriate payments to public officials).