An estimated 1 million gallons of manure spilled from a Fillmore County, Minn., dairy Sunday night when the concrete wall of a manure pit fractured, according to The Associated Press.

Cleanup crews were on the scene to prevent more leaking and pump the remaining manure onto nearby fields. Read more.

Minnesota Public Radio reports that as of Tuesday, about 75 percent of the spill had been contained. Despite the major spill, officials with the Minnesota Pollution Control Agency remain positive that it can be completely contained and cleaned up.

Officials will continue to investigate the spill to determine whether it could have been prevented. For more information, read, “Pollution agency probing major manure spill.”