After raising $3.37b in the largest equity offering in Canada, TransCanada Corporation (USA) announced shutting down parts of its Keystone pipeline for a week, as threat of a possible oil leak in South Dakota looms. Workers deployed in Keystone found patches of oil 6.4 km away from TransCanada’s Freeman pump station, BidnessEtc reported. As a precaution, the company workers have resorted to digging in order to determine the affected pipeline area. TransCanada has not yet released the amount of oil spilled.

The pipeline runs from Alberta, Canada, to refineries in Illinois and Cushing, Oklahoma, passing through the eastern Dakotas, Nebraska, Kansas, and Missouri. It is part of a pipeline system that would have also included the Keystone XL pipeline, had President Barack Obama not rejected that project last November, ABC News wrote.