The Justice Department on Thursday charged the U.S. business of Fiat Chrysler Automobiles with criminal conspiracy in its multi-year emissions fraud probe surrounding vehicles with diesel engines.

Reuters reported last week FCA US LLC, now part of Stellantis NV, had agreed to plead guilty to a criminal conspiracy charge arising from its efforts to evade emissions requirements for more than 100,000 older Ram pickup trucks and Jeep sport-utility vehicles in its U.S. lineup and would pay roughly $300 million in penalties.

U.S. District Judge Nancy G. Edmunds in Detroit set a plea hearing for FCA US for 1:30 p.m. Friday.

The government's criminal information charges FCA US with conspiracy to defraud the United States to violate the Clean Air Act and to commit wire fraud, said the automaker deceived U.S. regulators and sold the vehicles "knowing that those vehicles did not meet U.S. emissions standards" and also deceived customers "by making false and misleading representations."

Stellantis declined to comment.

The government said FCA US property subject to forfeiture was $203.6 million. FCA US is also expected to pay a criminal fine of about $96 million as part of the settlement.

The imminent guilty plea represents the final significant action U.S. officials are expected to take against FCA in the emissions fraud matter.

The affected diesel-powered vehicles span model years 2014 to 2016. FCA merged with French Peugeot maker PSA in 2021 to form Stellantis.

The plea deal comes five years after Volkswagen AG pleaded guilty to criminal charges to resolve its own emissions crisis affecting nearly 600,000 vehicles in a scandal that became known as "Dieselgate."

Volkswagen's deception precipitated additional scrutiny that resulted in officials on both sides of the Atlantic cracking down on automakers accused of using illegal software known as defeat devices to dupe government emissions tests.

European automakers relied on so-called clean diesel technology to make vehicles that could comply with tougher environmental regulations only for officials to find they were polluting more on the road than during the tests that certified them for sale. Automakers are now focusing efforts on battery-powered electric vehicles.

In January 2019, Fiat Chrysler agreed to a settlement worth about $800 million to resolve civil claims from the Justice Department and California in the diesel emissions probe.