A CBC News Edmonton investigation has won the prestigious Edward R. Murrow Award for investigative reporting in both the large-market TV and radio categories.

The CBC Investigates project - Imported Politics - detailed how a local Punjabi-language journalist became the target of a fabricated smear campaign by associates of Edmonton Progressive Conservative MLA Peter Sandhu.

The project, produced by Charles Rusnell and Jennie Russell, is believed to be the first in Canada to be produced in both English and Punjabi.

This is the second year CBC News Edmonton has won a Murrow Award. In 2013, it captured the large-market TV category for the investigation into the awarding of a potentially lucrative tobacco-litigation contract to a Calgary law firm with close personal and political ties to former premier Alison Redford.

The Murrow Awards recognize outstanding achievements in electronic journalism across North America and around the world. The winning entries are chosen by the Radio Television Digital News Association.

Last month, Imported Politics also won the regional RTDNA award for investigative reporting and it is a finalist in the Canadian Association of Journalist's community broadcast investigative reporting category.