Financial officers from companies that bought meat from an Iowa kosher slaughterhouse testified that bills from the plant didn't match their own records and so the companies refused to pay them.

The records are a critical part of prosecutors' evidence in the financial fraud case of former Agriprocessors, Inc., manager Sholom Rubashkin.

Albert Barel of Los Angeles-based City Glatt testified Monday that a government-appointed trustee of Agriprocessors was unable to show proof of delivery on bills from 2007 and 2008.

Rubashkin defense attorney F. Montgomery Brown questioned City Glatt's record keeping.

Rubashkin faces 91 charges of financial fraud. Agriprocessors was the site of a major immigration raid in 2008.