Authorities say an argument over a break room light led to a deadly stabbing involving three workers at Philadelphia International airport.

The stabbing occurred around 11:30 a.m. Thursday near Gate E6 in what city police say was a "secure area." They say the three men work for a company that cleans planes for Frontier Airlines, but their names weren't released.

Police say one worker turned off a break room light, angering another worker. The third worker soon pulled out a knife, cutting one of the men across the abdomen.

The 28-year-old stabbing victim was pronounced dead at a hospital.

Authorities say the two other workers ran off but were soon confronted by police. It wasn't clear what charges they may face.

Frontier Airlines referred all questions to the cleaning company.

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This story has been corrected to show the men were not employed by Frontier Airlines, but worked for a company that cleans the airline's planes, as per police.