A 26-year-old man has been arrested on suspicion of conspiracy to pervert the course of justice by officers from Operation Weeting, the Met's investigation into phone-hacking.
The man was arrested at a home address in Surrey and was taken into custody at a London police station.
It was the 25th arrest (but the 24th person) made by Operation Weeting since it was launched in January 2011.
Six people have so far been charged including former News International chief executive Rebekah Brooks and her racehorse trainer husband Charlie.
A further 14 people remain on bail pending further enquiries and four others have been released with no further action.
Meanwhile, the three people yesterday arrested by officers from Operation Elveden – the Met's probe into corrupt payments to police and public officials – were last night released on bail pending further inquiries.
Among them was 37-year-old former Daily Mirror journalist Greig Box Turnbull, who worked for the paper until taking voluntary redundancy in March.
He currently works for Westminster Council but was on secondment to Richmond Council at the time of his arrest.
A Westminster Council spokesman said yesterday: "We have yet to speak to the employee. With the possibility of further legal action it would clearly be inappropriate to comment further."
A 46-year-old prison officer and a 50-year-old woman, whose job was not identified, were also arrested at 6am yesterday morning.
Turnbull and the woman were both bailed to return to separate London police stations in late October. The 46-year- old man was bailed to return to a London police station this morning.
Thirty-seven arrests have so far been made in the Operation Elveden investigation.