US Immigration and Customs Enforcement is moving to detain an illegal migrant accused of killing a Louisiana man who was mowing his lawn when the Mexican national’s car allegedly ran him over in a drunken crash.

Roberto Romero-Hernandez, 34, was hit with a federal arrest detainer after being thrown behind bars and charged with vehicular homicide and driving while intoxicated in the Aug. 3 death of 59-year-old Rickey Maddox, according to the Department of Homeland Security.

The feds said they acted immediately to ensure the plastered alien — who was also driving without a license or valid plates — wouldn’t walk free following any local proceedings.

“This criminal illegal alien’s reckless decision to drink and drive killed an innocent man,” Assistant DHS Secretary Tricia McLaughlin said

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