Chipotle says it fired 450 in Minnesota last year

Chipotle Mexican Grill Inc. says it fired about 450 Minnesota employees last year who couldn't prove they were eligible to work in the U.S.

The Denver-based restaurant chain previously hadn't disclosed how many workers were dismissed after a Department of Homeland Security audit of employees' work documents, saying only that it was in the hundreds.

Chipotle disclosed the number in a filing last week with the Securities and Exchange Commission.

Chipotle says it requires all employees to have documents proving they are eligible to work in the U.S. but some workers may still be unauthorized.

A federal audit of workers' documents also is under way at Chipotle restaurants in Virginia and Washington, D.C., to see if their documents are authentic or contain false information.

(Copyright 2011 by The Associated Press. All Rights Reserved.)

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