A New Mexico high school was forced to delay classes after authorities say vandals slipped onto campus and pour vegetable oil throughout the hallways.
The Hobbs News-Sun reports the slick attack at Eunice High School in Eunice, New Mexico, reportedly occurred late Sunday and forced custodial staff to race Monday morning to clean up the mess.
Principal Tracy Davis says surveillance cameras captured six people wearing black clothing with hoodies and gloves pouring the vegetable oil on floors.
Davis says the greasy attackers gained entrance through an unlocked classroom window.
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Officials alerted parents and students via social media that classes were delayed until staff removed the oil.
No arrests have been made.
Eunice is about 327 miles (526 kilometers) southeast of Albuquerque.
The Associated Press contributed to this article.