The FBI confirmed Wednesday it was investigating allegations that a Louisiana farmer fired shotgun blasts over Mexican guest workers' heads, exposed them to pesticides and paid them less than minimum wage.

The abuse allegations were outlined in a federal lawsuit filed Wednesday by immigrant rights organizations on the workers' behalf.

The lawsuit accuses Charles "Bimbo" Relan, owner of Bimbo's Best Produce, of forcing the workers to toil in strawberry fields in Amite, La., about 75 miles northwest of New Orleans. Relan also confiscated the workers passports so they would not flee, the lawsuit claims.

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