The official United States National Transportation Safety Board report on the Enbridge pipeline breach and oil spill at Kalamazoo, Michigan has been delayed to the fall, according to local media reports.

The Kalamazoo Gazette and WDIV TV say the report will be six months late.

The Associated Press, quoting the Gazette says:

The National Transportation Safety Board attributed the delay to other investigations into separate pipeline incidents.

"Our investigations look at numerous aspects that could have played a role in the accident, such as maintenance, human factors, pipeline operations, and materials," said NTSB spokesman Peter Knudson.

"We'll also look at the emergency response and environmental remediation efforts to assess how they were handled."

Local Enbridge spokesman Jason Manshum said the company will be able to finish its internal investigation after the report is released. Manshum said Enbridge is working to take what it's learned from the spill and share that knowledge.