The news comes after a public battle between the two men over the appointment of Ron Taverner to the OPP.
Taverner, who recently withdrew his name from consideration for the position of OPP commissioner, was appointed by the government despite questions being raised about his friendship with Ford. Blair claimed the appointment was inappropriate and a clear conflict of interest.
Blair was fired after the government claimed he released confidential OPP correspondence through other court filings.
Last week the integrity commissioner cleared Ford of any conflict of interest in the appointment of Taverner.
A statement of claim in the defamation lawsuit against Ford was filed in Ontario Superior Court on March 15. Julian Falconer, Blair’s lawyer, confirmed the lawsuit to Global News but declined comment further.
Ford’s office responded to the lawsuit Wednesday afternoon through a written statement.
“The Premier’s concern is and always has been protecting and supporting the front line OPP officers who put their lives on the line everyday to protect our communities,” Laryssa Waler, Ford’s executive director of communications, said.
“Premier Doug Ford will be responding to Mr. Blair’s filing through his legal counsel. As the matter is before the courts, it would be inappropriate to comment further.”