NEW YORK (AP) - Motorola is accusing its former chief financial officer, Paul Liska, of destroying evidence by wiping files from a company laptop.

Liska sued the company after his Jan. 29 departure, saying he was fired for trying to warn that its projections for its ailing cell-phone business were too optimistic.

Motorola says Liska's "erratic behavior" made the Schaumburg, Ill.-based company look for a replacement late last year.

In a court filing Wednesday, Motorola said Liska took a laptop with him when he left and returned it two weeks later after running a data-destruction utility.

Motorola says that deprived the company of crucial information about his activities. It wants a court in Chicago to order Liska to provide the missing files.

Liska's lawyer did not immediately return a call for comment.