The mayor of Pittsburgh fired back at President Trump Thursday for his use of the city in rationalizing withdrawing from the Paris climate agreement, saying the city will continue to follow the deal.

Bill Peduto (D) tweeted Thursday that "it's now up to cities to lead" after Trump announced that the U.S. will pull out of the Paris climate deal.

The United States joins Syria, Nicaragua & Russia in deciding not to participate with world's Paris Agreement. It's now up to cities to lead — bill peduto (@billpeduto) June 1, 2017

Trump referenced Pittsburgh in his speech announcing the decision to withdraw, saying, "I was elected to represent the citizens of Pittsburgh, not Paris."

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Fact: Hillary Clinton received 80% of the vote in Pittsburgh. Pittsburgh stands with the world & will follow Paris Agreement @HillaryClinton https://t.co/cibJyT7MAK — bill peduto (@billpeduto) June 1, 2017

Peduto also hit back at a tweet from press secretary Sean Spicer quoting Trump's comments on Pittsburgh.

"As the Mayor of Pittsburgh, I can assure you that we will follow the guidelines of the Paris Agreement for our people, our economy & future," he wrote.

As the Mayor of Pittsburgh, I can assure you that we will follow the guidelines of the Paris Agreement for our people, our economy & future. https://t.co/3znXGTcd8C — bill peduto (@billpeduto) June 1, 2017

Trump also referenced Youngstown, Ohio, and Detroit in his speech as cities that he is prioritizing by withdrawing from the agreement. Clinton won each of the counties by wide margins.