Police officers investigating alleged computer hacking made new arrests on Tuesday of this week.
Former News of the World journalist Alex Marunchak and private investigator Jonathan Rees were both arrested.
The investigation into journalism-related computer hacking is part of the wider probe into criminal breaches of privacy.
Alex Marunchak was also employed by the Metropolitan Police as an interpreter with access to sensitive data between 1980 and 2000.
Private detective Daniel Morgan was murdered in 1987. Jonathan Rees is his former business partner. He was acquitted of Daniel’s murder last year.
The police have admitted corruption in the initial investigation. Labour MP Tom Watson said in parliament that Rees was at the “corrupt nexus of private investigators, police officers and journalists at the News of the World”.
Andy Coulson, when editing the NotW, repeatedly hired Rees. Coulson went on to be David Cameron’s spin doctor. He later resigned.
Meanwhile Rebekah Brooks and Andy Coulson have been told in court that they are not due to face a full trial until a year from now.
The former News of the World editors appeared in the dock at the hearing. They and 12 others were given a proposed trial date of 9 September 2013 over two batches of charges.