Lake Forest police, in cooperation with Northern Trust Bank, is investigating a fraud involving multiple customer accounts. Police said that from December through this month, a skimming device was attached to the lobby ATM at the Northern Trust Branch at 265 East Deerpath in Lake Forest. The device apparently was used to record the account numbers and/or PIN numbers of customers using this ATM, police said, and the numbers used to make fraudulent withdrawals at numerous ATMs in the Chicago area. Potential victims should contact Detective Kevin Zelk at ZelkK@cityoflakeforest.com to make a police report. The exact number of customers affected and the potential dollar loss involved is undetermined. Visit http://www.secretservice.gov for information about skimming.Copyright © 2013 Paddock Publications, Inc. All rights reserved.