PHILADELPHIA (CBS) — Police say an employee who is contracted out by Frontier Airlines was stabbed to death by a co-worker at Philadelphia International Airport on Thursday morning after a fight over a light.

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The fight happened in a break room down on the tarmac. No passengers were in danger. Flights did not stop. The men were on break from cleaning planes. Suspect in custody downtown. https://t.co/0kcPlg5iH3 — David Spunt (@DavidSpuntCBS3) May 3, 2018

Police say a fight in a maintenance break room on the tarmac between three Worldwide Flight Services employees, who are contracted by Frontier Airlines to clean planes, over an overhead light led to the fatal stabbing.

Philadelphia Police Lt. John Walker says one man turned off a light and the other wanted it on. A friend jumped in and three men became physical.

“The weather’s up, people’s nerves may be a little high and they’re out there and they are cleaning planes and it’s hot,” said Walker.

UPDATE: Victim pronounced dead after being stabbed. Authorities say three men were involved in a fight in a break room. They work for a cleaning company and did contract work for @FlyFrontier https://t.co/p959LusgNj — David Spunt (@DavidSpuntCBS3) May 3, 2018

Police say a 35-year-old man stabbed his 28-year-old co-worker in the upper left thigh, most likely with a box cutter. They are still searching for the weapon.

Authorities say weapon was likely a box cutter from a maintenance area. They don’t have it at this time. All three men were not in terminal. They were on tarmac in separate break room. Many questions how this could happen. https://t.co/0kcPlgmTyB — David Spunt (@DavidSpuntCBS3) May 3, 2018

The victim was transported to Presbyterian Hospital where he died.

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Authorities say the 35-year-old suspect ran away following the stabbing, but airport police were able to catch him and he is now in custody.

Frontier says they have been in contact with Worldwide Flight Services following the incident.

“The Frontier Airlines family is saddened to learn about this event and our hearts go out to those touched by the tragedy. We have reached out to WFS to assist them in any way possible as they deal with this incident,” the airline said in a statement.

Police say no passengers were in danger at the time of the stabbing and flights did not stop.

“There was no disruption to airport flights at all. Everything went as to the protocols of the police department and the Aviation Division. Police the Aviation Division, TSA, everybody worked together,” said Walker.

Officials are reviewing procedures for maintenance workers following the stabbing.

The names of the victim and suspect have not yet been released.