Roughly 70,000 gallons (264,978 litres) of oil from a pipeline spilled into the ground in Wisconsin, officials said.

An Enbridge Energy pipeline in Jefferson County spilled nearly 70,000 gallons of crude oil underground. The DNR said it is investigating.

Calgary-based pipeline giant Enbridge says it has cleaned up about 60 per cent of a nearly 265,000-litre oil spill in Wisconsin that was discovered last month.

A northern Wisconsin tribe along with a coalition of groups moved Thursday to block plans to reroute an aging pipeline around the tribe's reservation, arguing state regulators have underestimated the environmental damage that construction would cause.