Singh, who is also Assistant Vice President of the Republic Media Network, was picked up from his residence around 7.40 am, the official said.
The latest arrest has taken the number of people held by the Crime Intelligence Unit (CIU) of the crime branch in the case to 12.
Singh was earlier questioned on multiple occasions by the CIU, the official said.
The fake TRP scam came to light last month when ratings agency Broadcast Audience Research Council (BARC) filed a complaint through Hansa Research Group, alleging that certain television channels were rigging TRP numbers.
Hansa is one of BARC’s vendors on engagement with panel homes or people’s meters.