President Donald Trump took aim at automaker General Motors (GM) - Get Report on Sunday night, urging the company to hit reverse on its closure of a plant in Lordstown, Ohio. But the company responded by suggesting the plant's future "will be resolved" between GM and the United Auto Workers union, which recently sued the automaker.

"Just spoke to Mary Barra, CEO of General Motors about the Lordstown Ohio plant. I am not happy that it is closed when everything else in our Country is BOOMING. I asked her to sell it or do something quickly. She blamed the UAW Union - I don't care, I just want it open!" wrote Trump over Twitter.

The plant closed earlier this month, and, according to a report in the Cincinnati Enquirer, rolled its last Chevrolet Cruz from production on March 6. The plant had employed more than 1,600.

"To be clear," responded GM in a statement provided by spokesman Pat Morrissey, "under the terms of the UAW-GM National Agreement, the ultimate future of the unallocated plants will be resolved between GM and the UAW. We remain open to talking with all affected stakeholders, but our main focus remains on our employees and offering them jobs in our plants where we have growth opportunities."

GM also says it has placed over 1,000 employees from its recently closed plants to other GM locations, and that it has "opportunities available for virtually all impacted employees."

The UAW, which said it "will leave no stone unturned in keeping the Lordstown plant open," had sued the automaker last month. 

GM had earlier shed thousands of jobs at the plant over the past several years, and the closure means that Ohio won't be making GMs for the first time in a century, according to the Enquirer.

This story has been updated with a comment from GM and information about employees of the plant.