A spokeswoman for Enbridge Energy Partners says an oil pipeline leak in a Chicago suburb doesn't appear related to an earlier spill in Michigan.
Enbridge spokeswoman Terri Larson said the company doesn't know what caused the leak Thursday in the pipeline in Illinois or how much damage has been done.
But she says the company doesn't think it was related to a July rupture in a pipeline in Michigan that spilled more than 800,000 gallons of oil. That pipeline remains shut down.
Larson says Enbridge workers in Illinois are digging up that pipeline to give inspectors a chance to examine the steel pipe and get a better idea of what went wrong.
The U.S. Environmental Protection Agency has given Enbridge until noon Monday to stop the flow of oil near Romeoville.
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