The Central Bureau of Investigation, CBI, has widened its probe in the 2G scam and is investigating spectrum allocation to direct-to-home (DTH) broadcasters by seeking details of sanction of bandwidth. Talking to newsmen in New Delhi on Sunday, a CBI Spokesperson said the decision to probe the DTH broadcasters was taken after the investigating agency found that some of the telecom companies, under probe in the 2G scam, were also broadcasters of the service.

The CBI had sought details including the original files containing applications for assigning of spectrum and wireless operating licence for DTH services. The CBI is also looking into a possible kickback received by a south India-based TV channel.