A Long Island postal worker helped an Immigrations and Customs Enforcement detainee temporarily escape custody outside and tore into agents in two languages, according to a criminal complaint unsealed Thursday.

Tamara Mayorga-Wong, 57, allegedly opened the door of an official vehicle in front of the Westhampton Post Office and told a handcuffed detainee in the backseat to run for it before trying to drive away in her own car, court documents said.

Cops caught up with the unidentified detainee and arrested Mayorga-Wong after she fled through the building, got into her car in a back parking lot, locked herself and tried to drive away, the records said.

Agents then repeatedly told her to get out of the vehicle before she was forcibly removed, court records claimed.

“Why are you doing th

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