SPRINGFIELD, Ill. (CBS) — A federal probe finds no evidence that foreign hackers infiltrated computers controlling a downstate water plant.

As CBS News Correspondent Jim Chenevey reports, federal investigators have been looking into the alleged foreign hacker attack at the Curran-Gardner Township Public Water District treatment facility in Springfield earlier this month.

LISTEN: CBS News Correspondent Jim Chenevey reports

Investigators have concluded that there was no break-in after all.

A report from the Illinois Statewide Terrorism and Intelligence Center that was leaked for the media blamed Russian computer hackers for breaking into the control system at the plant and causing a pump to fail.

But investigators for the U.S. Department of Homeland Security and the FBI say an examination of computer logs shows no evidence of the break-in, and the pump burned out simply as a result of normal wear-and-tear.

Don Craven, a trustee for the water district, has said the water pump burned out earlier this month and that the water district has multiple pumps. He said there was never a break in service to its 2,200 rural customers.

(TM and © Copyright 2011 CBS Radio Inc. and its relevant subsidiaries. CBS Radio and EYE Logo TM and Copyright 2011 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed. The Associated Press contributed to this report.)

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