None of the executives, who were implicated in the so-called Ornge Air Ambulance scandal, will be facing criminal charges.
The OPP says they failed to find sufficient evidence to lay criminal charges, following the 6-year investigation.
The probe was launched back in 2012, when allegations surfaced, of criminal wrongdoing on the part of senior employees at Ornge Air Ambulance service, including then CEO Chris Mazza.
There were reports at the time that indicated a private firm, controlled by Mazza, received a payment of $4.7 million dollars, with the promise of more, from an Italian helicopter company that was building the new Ornge choppers.
The Italian company has long denied any wrong doing.
According to a release, the OPP investigative team faced considerable investigative challenges during the months and years it took to acquire and review in excess of 41 gigabytes of information, more than 97,000 documents, more than 500,000 email communications, and interviews of 58 people in Canada, the United States and Italy.
The investigation including the forensic accounting work spent on this file - between February 2012 and April 2017 - required 1,789 hours of time and cost slightly less than $250,000. The ORNGE corporate structure has been described by the Government of Canada's forensic accounting agency as "artificial complexity."