(Bloomberg) -- Mercedes-Benz Group AG said the US Department of Justice has ended a probe related to exhaust emissions and won’t file charges against the German carmaker.

“We can confirm that the DOJ has closed its investigation and will not bring charges against Mercedes-Benz,” the Stuttgart-based company said Saturday in an emailed statement.

The decision is “another important step towards legal certainty in connection with various diesel proceedings,” said Renata Jungo Bruengger, a member of the Mercedes-Benz management board. DOJ officials didn’t immediately respond to requests for comment outside business hours on Saturday.

The company’s shares dropped the most in more than three months in April 2016 when it announced that the DOJ had asked it to review its certification and admissions process related to exhaust emissions in the US.

It said it was cooperating fully with authorities and that a US class-action lawsuit alleging some of its cars violated emissions standards, which prompted the DOJ request, was “baseless.”

Handelsblatt first reported the DOJ decision.

--With assistance from Alicia Diaz.

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