On Thursday, the website, BlogTO, reported it had been leaked a screenshot of an internal email instructing Ontario Parks staff that, “per premier’s office direction, we are not allowed to mention climate change in social media content at this time.”

The accusations, originating from a Toronto website, were later denied by both the premier's office and the environment minister — the latter issuing his own tweet that noted the government of Canada's most populous province took the issue of climate change seriously.

Ontario Premier Doug Ford tweeted a selfie of himself with Alberta Opposition leader Jason Kenney criticizing a tax on pollution, as his provincial government faced accusations from federal Liberals of trying to stop some public servants from speaking about climate change.

An Ontario Parks employee who wishes to remain anonymous sent us this: https://t.co/3f8NBkT6m1 #onpoli #climatechange pic.twitter.com/hMtGui8pV3

National Observer has not been able to independently review the emails described by BlogTO. Ford’s office denied giving any such instructions to public servants and an internal memo from senior public servants indicated that the government had launched an internal investigation to determine why false information was circulating and strengthen security procedures, The Canadian Press reported on Friday.

This report also mentioned that a director from the communications branch of the Ontario Ministry of Natural Resources and Forestry had also sent an email indicating that Ford's office was "reviewing and approving all social media content from all ministry channels."

BlogTO reported Friday in a subsequent story that " multiple staffers had confirmed the veracity of the email screenshot."

After Ontarians & Cdns have experienced extreme weather linked to climate change -extreme heat, forest fires, flooding- the Ontario gov't appears to be muzzling @OntarioParks by banning words "climate change". Time to focus on climate action. We have a plan. Ontario has no plan. https://t.co/rqKTRKXqYo

Ford's office as well as the Ministry of the Environment, Conservation and Parks, the Ministry of Energy and the Ministry of Natural Resources and Forestry did not immediately respond to requests for comment from National Observer.

National Observer also reached out to five public servants who supposedly received one of the emails, but did not immediately get a response.

Lisa Sarracini, the MNRF communications director who BlogTO reported sent an email indicating that Ford's office "will not be approving any posts mentioning climate change at this time," had not yet responded to voicemail by publication.

When reached for comment by National Observer, MacLachlan said she was unable to comment and directed questions to the natural resources ministry.

The website said that the first email came from an Ontario Parks employee who wished to remain anonymous. It is shown to be sent by social media coordinator Anne MacLachlan.

"Time to focus on climate action," she added. "We have a plan; Ontario has no plan."

Federal Environment and Climate Change Minister Catherine McKenna used the reports on BlogTO to publicly criticize the Ford government, noting on Twitter that the government "appears to be muzzling Ontario Parks by banning (the) words 'climate change.'"

A new twist in the Conservative approach to #climatechange. Here’s their direction to @OntarioParks.



"Hi all," it reads. "Per Premier's Office direction, we are not allowed to mention climate change in social media content at this time." https://t.co/FIQzVprhbe — Gerald Butts 🇨🇦 😷🖐🧼🤚 (@gmbutts) August 24, 2018

Prime Minister Justin Trudeau's principal secretary Gerald Butts also weighed in, saying it was a "new twist in the Conservative approach to climate change."

Ontario Green Party Leader Mike Schreiner wrote an open letter to Ontario Environment, Conservation and Parks Minister Rod Phillips, about the issue.

Yesterday reports emerged that @OntarioParks staff were directed not to talk about climate change on social media.



These allegations are serious. Today I sent a letter to the Minister of @ONenvironment asking him to clarify. https://t.co/yXFEctgfVB #onpoli — Mike Schreiner (@MikeSchreiner) August 24, 2018

In an interview, Schreiner called the BlogTO reports "appalling."

But he said he has yet to hear back from Phillips, and hasn't been able to confirm for himself if the claims that the Ford government is clamping down on climate-related speech online are true.

“It's chilling to think that in 2018, when you literally have forest fires in B.C. and Ontario (and) across the country costing human life, the environment, hundreds of millions of dollars...that you have a government that would be muzzling scientists and telling public servants that you're not allowed to speak truth,” said Schreiner. “It’s shocking actually.”

Appreciate the letter @MikeSchreiner Please see my response attached. I assure you, we very much understand the challenges that climate change presents to our environment. Looking forward to working with you for solutions going forward. pic.twitter.com/acFd98udFl — Rod Phillips (@RodPhillips01) August 24, 2018

Phillips later replied to Schreiner's letter confirming that no instructions had been given by the premier's office to restrict the use of the term "climate change" on the government's social media accounts. He also noted that the government had tabled legislation that, if adopted, would require him to introduce a new climate change plan, set targets and report back on progress.

"Our government takes climate change very seriously and we understand the importance of taking steps to ensure we protect our environment," Phillips wrote in the letter, sent on Friday and shared on his Twitter account. "We care a great deal about the environment and remain committed to take action to encourage lower emissions."

Extreme weather in the first six months of the year have already led to $696 million of insurable losses in Ontario, Schreiner noted. Scientists say climate change is making extreme weather events like flooding, wildfires and droughts more intense and more frequent.

What a wonderful time in the beautiful city of Halifax capped off by a breakfast with future Premier of Alberta @jkenney. Looking forward to fighting the job killing carbon tax with you. #CPC18 pic.twitter.com/l452f4hti7 — Doug Ford (@fordnation) August 24, 2018

Climate change erasure a page from Trump playbook

This would not be the first time officials inside a government have sent instructions to discourage a discussion about climate change by public servants and the population.

South of the border, the Trump administration systematically erased the term “climate change” from government-run websites starting in 2017.

The Environmental Data and Governance Initiative, a U.S.-based watchdog group funded by the non-profit Public Lab and other foundation grants, identified in January how the Environmental Protection Agency, the Department of State, Department of Energy and other U.S. agencies removed or reduced the prominence of "climate change" from websites and documents.

In Canada, the government of former prime minister Stephen Harper performed a similar feat when it muzzled its scientists from talking with journalists, which led to media coverage of climate science dropping precipitously.

A federal investigation later found the Harper government had violated its own transparency rules by muzzling federal scientists. Under the Trudeau government, Canada has since moved to introduce new rules to shield scientists and researchers from political interference and enshrine evidence-based decision-making in government.

Ford's war on carbon pricing continues

Ford said during the final leadership debate that he believes in “man-made global warming.” But he ran his campaign largely on the promise to abandon Ontario’s price on carbon pollution, because in his estimation, it did “absolutely nothing to help the environment.”

Many economists say there is ample empirical evidence that carbon pricing works and would be cheaper than the cost of doing nothing and allowing climate change to accelerate unabated. University of Alberta energy and environmental economist Andrew Leach cites evidence showing British Columbia’s emissions would be five to 15 per cent higher without the imposition of a carbon tax in that province a decade ago.

Modelling analysis from the independent economics non-profit Ecofiscal Commission shows a federal carbon price could reduce emissions by roughly 170 megatonnes in 2030, said executive director Dale Beugin.

Yet Ford repeated the false idea that carbon taxes are completely useless, when giving a speech at the Conservative convention in Halifax on Thursday. Ford brought the crowd to a standing ovation when he mentioned fighting Trudeau on his plans to make polluters pay.

"We will hold their feet to the fire and make them accountable for the bad, terrible policies that we've seen over the years. And we will start by stopping their punishing carbon tax,” Ford said to the raucous crowd. "It is absolutely the worst tax ever created, a tax that does nothing for the environment.”

Kenney, who leads the United Conservative Party in Alberta, has also criticized carbon pricing, saying he would scrap a provincial carbon tax system introduced by the NDP government of Premier Rachel Notley.

The federal government has said it will introduce a backstop in 2019 to impose taxes on jurisdictions that fail to meet a national standard.

Editor's note: This article was updated at 9:56 p.m. ET on Aug. 24, 2018 with new comments from Ontario Environment Minister Rod Phillips.