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07/05/2011 01:10 pm ET | Updated Sep 04, 2011

Yellowstone Oil Spill: Over 1,000 Barrels Leak From Burst Exxon Pipeline (VIDEO)

Emergency clean-up crews are working hard after an ExxonMobil pipeline ruptured over the weekend, spilling more than 1,000 barrels into Montana's Yellowstone River.

Officials are still investigating the cause of the rupture, initially speculating that a rapid current removed a protective layer of dirt from the pipeline, exposing the pipes to debris traveling down the river.

ExxonMobile has since shut down the pipeline.

Watch the The Huffington Post report above.