Another investigation has cleared former Alberta premier Alison Redford of wrongdoing on how she selected a law firm to sue tobacco companies on behalf of the province.

A conflict of interest is complicating the Alberta government's response to a former Supreme Court judge's report. That report, presented Monday, suggested previous conflict-of-interest allegations against former premier Alison Redford should be reviewed again.

The Alberta government announced Monday it's launching an external review of the 2013 investigation into allegations of conflict of interest involving former Premier Alison Redford.