WINNIPEG, Manitoba, March 7 (Reuters) - TC Energy's Keystone oil pipeline is offline due to operational issues, cutting off a major conduit of Canadian oil to the United States, two industry sources said on Thursday.

The 622,000 barrel-per-day pipeline has been dogged by problems, including a 2022 spill in rural Kansas.

TC did not immediately respond to a request for comment. (Reporting by Rod Nickel in Winnipeg, Manitoba; Editing by Leslie Adler)